Abstract: Electrical control of the emitter of a coupled quantum emitter-resonant cavity structure is provided. Electrodes are disposed near a semiconductor quantum dot coupled to a semiconductor optical cavity such that varying an applied bias at the electrodes alters an electric field at the quantum dot. Optical input and output ports are coupled to the cavity, and an optical response of the device relates light emitted from the output port to light provided to the input port. Altering the applied bias at the electrodes is capable of altering the optical response. Preferably, the closest electrode to the cavity is disposed between or away from angular lobes of the cavity mode, to reduce loss caused by the proximity of electrode to cavity. The present approach is applicable to both waveguide-coupled devices and non-waveguide devices.

Abstract: A programmable encoder is provided that includes at least one optical input for receiving a modulated broadband optical signal and at least one optical output. A dispersion element receives the optical signal from the optical input and spatially separates the optical signal into a plurality of wavelength components. A collimating element is provided for collimating the plurality of wavelength components. An actuatable optical arrangement receives the collimated plurality of wavelength components from the collimating element. The actuatable optical arrangement includes a digital micromirror device (DMD) from which a programmably selected subset of wavelength components are reflected at least twice before being directed to a selected one of optical outputs to thereby encode the CDMA signal.

Abstract: Exemplary systems and methods for testing communication media and devices are disclosed herein. An exemplary system may include a transmitting media support and a receiving media support, each including a plurality of communication media. The system may further include a movement support configured to selectively translate the receiving media support relative to the transmitting media support between a transmission position and a free position. In the transmission position, a receiving media may be engaged with the transmitting media to receive an initiated signal from the transmitting media. In the free position, a first end face of the receiving media may be spaced apart from a second end face of the transmitting media, thereby preventing contact between the first and second end faces. The movement support may be further configured to align the at least one of the receiving media with the transmitting media.

Abstract: An optical device which reduces coupling loss while improving practicality is provided. A multi-core fiber coupling device is an optical device which couples a multi-core fiber to single core fibers, and includes a first optical system which is located on optical axes of a plurality of beams emitted from the multi-core fiber, and which makes the optical axes of the respective beams non-parallel to each other, thereby making the beams in a state of being separated from each other, and a second optical system S2 which makes the optical axes of the plurality of beams in a state of being non-parallel to each other on the side of the first optical system, in a state of being approximately parallel to each other.

Abstract: A method for automatic confirmation of an optical network element optical modules each having multiple fibres; a fibre shuffle interconnector having ports to which said optical modules are connected; and a configuration unit which performs an automatic configuration of said optical network element by controlling all optical modules connected to said fibre shuffle interconnector to transmit a fibre identifier associated with a fibre of the respective optical module to the respective port of said fibre shuffle interconnector to which said optical module is connected, wherein said fibre shuffle interconnector forwards the received fibre identifier via another port of said fibre shuffle interconnector to another optical module of said optical network element which detects said forwarded fibre identifier being monitored by said configuration unit to generate a connectivity matrix indicating the connection of said optical modules to said fibre shuffle interconnector on the basis of the detected fibre identifiers.

Abstract: An optical fiber switch (16) for alternatively redirecting an input beam (14) comprises a redirector (18) and a redirector mover (20). The redirector (18) redirects the input beam (14) so that a redirected beam (46) alternatively launches from the redirector (18) (i) along a first redirected axis (354) that is spaced apart from a directed axis (344A) when the redirector (18) is positioned at a first position (348), and (ii) along a second redirected axis (356) that is spaced apart from the directed axis (344A) when the redirector (18) is positioned at a second position (350) that is different from the first position (348). The redirector mover (20) moves the redirector (18) about a movement axis (366) between the first position (348) and the second position (350).

Abstract: An OADM in a wavelength division multiplexing transmission system includes a wavelength selection switch that selects a predetermined wavelength from a multiple optical signal obtained by multiplexing a phase modulated signal and an intensity modulated signal and outputs the selected wavelength signal to a predetermined output port. The wavelength selection switch has a different delay for each wavelength of the multiple optical signal. For example, the wavelength selection switch includes a mirror array. Optical paths from the surfaces of mirrors arranged on the mirror array to the diffraction grating are different in the case of adjacent mirrors.

Abstract: An apparatus comprising a plurality of switches coupled to a plurality of corresponding colorless laser transmitters, an odd channel coupler coupled to each of the switches, an even channel coupler coupled to each of the switches, and an interleaver coupled to the odd channel coupler and the even channel coupler. Also disclosed is an apparatus comprising a coupler coupled to a plurality of colorless laser transmitters, a first interleaver coupled to the coupler, and a second interleaver coupled to the first interleaver. Also disclosed is an apparatus comprising an odd channel coupler coupled to a plurality of first laser transmitters, an even channel coupler coupled to a plurality of second laser transmitters, and an interleaver coupled to the odd channel coupler and the even channel coupler.

Abstract: An optical path switching device comprises at least one movable carrier plate; at least two optical fiber connection sockets arranged on the movable carrier plate and each connected with an optical fiber; and a driving device mechanical coupled to the movable carrier plate, driving the movable carrier plate to carry one of the optical fiber connection sockets to a position corresponding to an optical fiber connection plug, whereby the optical fiber connection plug can be coupled to the optical fiber connection socket connecting with an intended optical path. The present invention switches the optical path in a purely-mechanical way without using any optical component. The present invention has advantages of simple structure, low cost and low signal loss.

Abstract: An optimized planar optical router consisting of two stages performing stationary imaging between an input waveguide and a set of output waveguides has advantages of reduced size, larger number of channels and minimal loss variation in each passband. The new router is an optimized M×N imaging arrangement including two waveguide gratings and n waveguide lenses connected between the principal zones of the two gratings. The largest values of N are realized by using a combination of two techniques that increase N without increasing the size of the two gratings. One technique increases N for a given number n of lenses and, the other, increases n. In one embodiment, each lens produces a periodic sequence of passbands, all transmitted from a particular input waveguide to the same output waveguide, whereas, in a second embodiment, the above passbands are transmitted to different output waveguides. In both cases, the loss caused by secondary images is substantially reduced by including secondary lenses.

Abstract: An optical delay device includes an optical path in which an input optical signal travels the same path recursively; an optical switch that switches between an output state of outputting the optical signal input to the optical path, and a non-output state of not outputting the optical signal input to the optical path; and a controller that sets the optical switch to the non-output state until a point in time when a given delay time elapses since input of the optical signal to the optical path and at the point in time when the given delay time elapses, switches the optical switch to the output state.

Abstract: A switching array is disclosed that has a plurality of vertical cavity surface emitting lasers having phase shifting mirrors. The switching array may be used for providing a device and system that has optical signal processing of sensing, a serialization and protocol interface, that has increased gray scale levels and sensitivities, pixel polarization detection, higher speed, lower power requirements and provides optical or electrical output for holographic optical storage to a bus or network.

Abstract: The present invention provides a bidirectional optical signal traffic-directing and amplification module which is used in a method for simultaneous real-time status monitoring and troubleshooting of a high-capacity single-fiber hybrid passive optical network that is based on wavelength-division-multiplexing techniques.

Abstract: Disclosed is a method device assembly and system for facilitating the interconnection of communication bearing cables connected cable connectors. An interconnect-point support structure comprising two or more cable connector slots, wherein in each of the two or more slots is adapted to host a cable connector attached to a respective cable. A mechanical arm functionally associated with the interconnect-point support structure is adapted to release a cable connector, mobilize and mate it to another connector.

Abstract: A reconfigurable optofluidic apparatus includes a microfluidic chip including a microfluidic channel further including an inlet for a liquid core waveguide fluid; a channel pathway for the liquid core waveguide fluid; a plurality of non-core waveguide fluid inlets; a switching chamber having a larger cross sectional area than the channel pathway; and an outlet for the liquid core waveguide fluid and non-core waveguide fluid, further including a plurality of non-liquid core waveguides disposed in the switching chamber. Light input to the apparatus propagates in the liquid core/liquid cladding (liquid) waveguide. The path of the liquid waveguide can be steered in a region of the apparatus over one of the non-liquid core waveguides such that the light is end-fire- or evanescently-coupled into the non-liquid core waveguide and output therefrom or between two of the non-liquid core waveguides and not coupled or output. Associated optofluidic switching methods are disclosed.

Abstract: A serial optical data transmission system is provided. The serial optical data transmission system includes a displaceable optical pathway disposed adjacent to a slot configured to receive a first monitoring and/or control module. The optical pathway is biased towards a serial optical data bus position for transmission of optical data to or from at least one second monitoring and/or control module when the first monitoring and/or control module is removed from the slot. Further, the optical pathway is displaced from the serial optical data bus position when the first monitoring and/or control module is in the slot.

Abstract: A wavelength selective switch for suppressing degradation of pass band characteristics when the temperature rises. The wavelength selective switch includes a spectroscopic element for separating input light and providing angular dispersion depending on wavelengths, a collective lens for gathering light output from the spectroscopic element, and a movable reflection block which includes a plurality of mirrors arranged in the direction of angular dispersion made by the spectroscopic element, changes the angles of the mirrors in a direction differing from the direction of angular dispersion, and reflects the light coming from the collective lens. The collective lens is fixed at one end with respect to the direction of angular dispersion, expands with heat in a direction in which it is not fixed when the temperature rises, and outputs the light in a direction opposite to the direction in which the angle of light output from the spectroscopic element changes.

Abstract: In a waveguide device, unnecessary optical power is appropriately terminated. According to an embodiment of the present invention, the waveguide device has a termination structure filled with a light blocking material to terminate light from a waveguide end. In the termination structure, a cladding and a core are removed to form a groove on an optical waveguide. The groove is filled with a material (light blocking material) that attenuates the intensity of light. Thus, light input to the termination structure is attenuated by the light blocking material, suppressing crosstalk which possibly effects on other optical devices. Thus, such a termination structure can restrain crosstalk occurred in optical devices integrated in the same substrate and can also suppress crosstalk which possibly effects on any other optical device connected directly to the substrate.

Abstract: A wavelength selective switch includes a wavelength dispersing element, a wavelength converging element, multiple transmission control elements, and a controller. The wavelength dispersing element performs wavelength dispersion of input signal light. The transmission control element divides input signal light into wavelength bands within a channel band and transmits or cuts off the divided input signal light. The wavelength converging element converges signal light having respective wavelengths produced from the transmission control elements for output. The controller controls a transmittance of the transmission control element of at least one of the low and high frequency sides in a channel band.

Abstract: A method for cross connecting optical signals includes using a common beam steerer to direct a set of optical signals from a set of input ports to a set of output ports. The method further includes adjusting a curvature of the common beam steerer so that paths of the optical signals have substantially the same effective path length.

Abstract: It is an object of the present invention to provide an optical switch system using optical interference. An optical switch system (1) comprises an input part (2) of an optical signal, a branching part (3) of the signal, a main Mach-Zehnder waveguide (MZC) (7), a first intensity modulator (9) provided on a first arm (4) for controlling an amplitude of an optical signal propagating through the first arm (4), a second intensity modulator (10) provided on a second arm (5) for controlling an amplitude of an optical signal propagating through the second arm (5), and a combining part (6) of the signals outputted from the first arm and the second arm, wherein one or both of the branching part (3) and the combining part (6) are X-branched.

Abstract: An optical switch is described that includes two optical waveguides, which are defined in a semiconductor layer, positioned proximate to an intermediate component, such as a micro-resonator or a directional coupler. Material underneath a portion of either or both optical waveguides is removed so that the portion of either or both optical waveguides is free standing, and a group of electrodes is proximate to the free-standing portion of either or both optical waveguides. During operation of the optical switch, a spacing-control circuit applies an electrical signal to the group of electrodes. An electrostatic force associated with the electrical signal modifies a spacing between the free-standing portion of either or both optical waveguides and the intermediate component, thereby substantially increasing optical coupling between either or both optical waveguides and the intermediate component to convey a broadband optical signal between the optical waveguides.

Abstract: An optical switching system is disclosed. The system comprises: input optics, for receiving light from at least one input optical port and separating the light into a plurality of optical channels to assign a separate optical path to each channel of each input optical port. The system further comprises an input steering array and an output steering array arranged such that the input steering array is imaged onto the output steering array, wherein the input steering array is configured to receive the separated light and steer each optical channel to an individual element of the output steering array. The system further comprises output optics, for receiving the optical channels from the output steering array and coupling the optical channels into at least one output optical port.

Abstract: A virtual electronic switch system for a vehicle is provided. In one example, the system includes a switch assembly, a switch interface, and a computer. The switch assembly provides actuators that interface with non-contact sensors in the switch interface. The computer is coupled to the switch interface and assigns functions to each of the actuators. The non-contact sensors detect movement of the actuators and signal the computer, which manipulates an electrical system in the vehicle based on the assigned function.

Abstract: An optical switch includes a microresonator comprising a plurality of silicon nanoparticles within a silicon-rich silicon oxide layer. The microresonator further includes an optical coupler optically coupled to the microresonator and configured to be optically coupled to a pump source and to a signal source. A method of optical switching includes providing an optical switch comprising an optical coupler and a microresonator having a plurality of nanoparticles and receiving an optical pulse by the optical switch, wherein at least a portion of the optical pulse is absorbed by the nanoparticles such that at least a portion of the microresonator undergoes an elevation of temperature and a corresponding refractive index change when the optical pulse has an optical power greater than a predetermined threshold level.

Abstract: An optical switch includes a first connector holding an end of at least one optical fiber and a second connector holding respective ends of at least two optical fibers. The optical switch further includes a sliding mechanism faces a connecting surface of the first connector and a connecting surface of the second connector each other, to optically connect between the at least one optical fiber held in the first connector and one of the at least two optical fibers held in the second connector, and slides the connecting surface of the first connector and the connecting surface of the second connector relative to each other with keeping a facing state, and a spacer mechanism for preventing the respective end faces of the facing optical fibers held in the first and second connectors from contacting each other, or from contacting the connecting surfaces of the first and second connectors, respectively.

Abstract: A backplane for a computing system may include a connector configured to provide a detachable mechanical coupling with a circuit board, and an optical signal path configured to carry optical signals. In addition, an optical bypass switch may be configured to couple optical signals from the optical signal path to the circuit board and to couple optical signals from the circuit board to the optical signal path responsive to an enabling signal. The optical bypass switch may be further configured to transmit optical signals therethrough to bypass the circuit board responsive to an absence of the enabling signal. Related circuit boards, computing systems, bypass switches, and methods are also discussed.

Abstract: A device includes a semiconductor waveguide and a control signal waveguide formed along a planar surface of a substrate. The control signal waveguide includes a segment located along and proximate a segment of the semiconductor waveguide. The control signal waveguide is configured to photo-excite charge carriers in said semiconductor waveguide.

Abstract: A wavelength selective switch (WSS) based on an array of MEMS mirrors tiltable in 1-dimension about only one axis exhibits “hitting” or unwanted port connections during switching. Two WSS's can be cascaded to create M×N switching functionality in a hitless manner by the inclusion of block ports at specified positions in one or both of the WSS's. Greater use efficiency of ports can be achieved if quasi-hitless performance is acceptable.

Abstract: An optical fuse or energy-switching-off device includes an optical waveguide having an input section and an output section, the two sections forming a pair of opposed surfaces extending transversely through the axes of the waveguide sections. A substantially transparent material is disposed between the opposed surfaces and comprises an electrically conductive nanotube web immersed in dielectric material, where the nanotubes are not in electrical contact with each other. The substantially transparent material forms a plasma when exposed to optical signals propagating within the optical waveguide with an optical power level above a predetermined threshold, and the plasma damages the opposed surfaces sufficiently to render the surfaces substantially opaque to light propagating within the input section of the optical waveguide so as to prevent the transmission of such light.

Abstract: A light-emitting device for emitting light having a desired color point, comprising at least one solid-state light source (1), at least one light-converting element (5), a light guiding arrangement (2) and a switch control unit (4), wherein the solid-state light source (1) is provided for emitting primary radiation (20), the light guiding arrangement (2) arranged between the solid-state light source (1) and the light-converting element (5) has at least one electro-optical switch (31) for controllably splitting the primary radiation (20) into a first portion (21) and a second portion (22), the switch control unit (4) is provided for controlling the electro-optical switch or switches (31) for variably adjusting the ratio between the first (21) and the second portion (22) of the primary radiation (20), and the light-converting element (5) is provided for the partial or complete absorption of at least a first portion (21) of the primary radiation (20) and for the re-emission of secondary radiation.

Abstract: An optical deflection apparatus includes a signal light source configured to emit signal light having one or more wavelengths, a control light source configured to emit control light having a wavelength different from the wavelength of the signal light, a thermal lens forming optical element including a light absorption layer configured to transmit the signal light and selectively absorb the control light, and a beam-condensing unit configured to cause beam-condensation of the control light and the signal light at different convergence points in the light absorption layer.

Abstract: In an optical switch, fibers in a fiber array are arranged in a row. When a region where lights input into or output from the fibers in the fiber array intersect is taken as an intersecting position C, and an axis parallel to the fibers in the fiber array and passing through the intersecting position C is taken as a Z axis, then a distance ? between a core of a desired fiber among the fibers and an optical axis of a corresponding one of the lenses varies depending on a distance S of the desired fiber from the Z axis.

Abstract: Described are systems and methods that provide tunable true time delay of a signal using a compact photonic circuit. The photonic circuit comprises a plurality of waveguides, in which each waveguide corresponds to a different time delay. A particular one of the waveguides corresponding to a desired time delay is selected by tuning the wavelength of a tunable laser. Additional photonic circuits can be used to provide additional selectable time delays.

Abstract: An optical waveguide collimator includes: an optical waveguide base material which includes a light emitting face having a light emitting end face of an optical waveguide, and an adhering area face provided separated from the light emitting face; a collimator lens arranged on a light emitting end face side of the optical waveguide; and a lens holding member which holds the collimator lens and which is adhered and fixed to the adhering area face of the optical waveguide base material.

Abstract: An optical fiber switch which may include first and second angled optical fibers having respective first and second end faces. Each of the first and second angled optical fibers may include a core having a core index of refraction, and a cladding surrounding the core and having a cladding index of refraction less than the core index of refraction. The optical fiber switch may further include a first index matching elastomeric solid layer having a proximal face coupled to the first end face, and a distal face opposite the proximal face to be repeatably optically coupled to the second end face. The first index matching elastomeric solid layer may have an index of refraction matching at least the index of refraction of the core. The optical fiber switch may also include at least one actuator for relatively moving the first and second angled optical fibers between a coupled position and an uncoupled position.

Abstract: A wavelength selective switch utilizing aperture-shared optics and functionally distinct planes of operation that enables high fiber port counts, such as 1×41, and multiplicative expansion, such as to 1×83 or 1×145, by utilizing elements optimized for performance in one of the functionally distinct planes of operation without affecting the other plane.

Abstract: The present invention provides an optical apparatus having a multimode interference coupler configured to optically couple a strip waveguide to a slot photonic crystal waveguide. The multimode interference coupler has a coupling efficiency to the slot photonic crystal waveguide greater than or equal to 90%, a width that is approximately equal to a defect width of the slot photonic crystal waveguide, a length that is equal to or less than 1.5 ?m, and interfaces with the slot photonic crystal waveguide at an edge of a period that gives a termination parameter of approximately zero. The optical apparatus may also include an insulation gap disposed between the multimode interference coupler and the slot photonic crystal waveguide, wherein the length of the multimode interference coupler is reduced by approximately one half of a width of the insulation gap.

Abstract: In an optical network design apparatus, a constraint setter sets a first constraint that one of alternative values given beforehand is selected as the dispersion compensation amount of each node, sets a first margin value that assumes a nonnegative value, sets a second constraint that the first margin value is equal to or greater than the difference between the residual dispersion and the lower bound of an allowable range, sets a second margin value that assumes a nonnegative value, and sets a third constraint that the second margin value is equal to or greater than the difference between the upper bound of the allowable range and the residual dispersion. A calculation controller generates an objective function including the first, second and third constraints and including a summation of the first and second margin values for all paths, and derives a solution that minimizes the objective function.

Abstract: An optical node includes a reconfigurable optical add drop multiplexer (ROADM) core configured to transmit optical signals of multiple wavelengths to and receive optical signals of multiple wavelengths from another optical node. The ROADM core is also configured to add optical signals thereto and to drop optical signals therefrom. The node also includes two different types of add-on devices, each connected to the ROADM core device and configured to process optical signals of multiple wavelengths. As a result, a multifunctional and reconfigurable optical node can be provided.

Abstract: A switch having two apertured plates one of which is movable relative to the other to occupy spaced switch positions, the apertures being arranged in the plates so that in each switch position two or more pairs of apertures are aligned and all others are masked, wherein light transmitted through a selected one of the two or more aligned aperture pairs in a particular switch position is visible through an external switch position indicating window to thereby provide an unambiguous indication that the movable plate is positively registered in the particular switch position.

Abstract: An optical beam switch includes at least one input optical wave guide, multiple output optical wave guides and an optical switching element for selectively switching a light beam guided in the at least one input optical wave guide to one of the output optical wave guides, in which the switching element is between the at least one input optical waveguide and the multiple output optical waveguides. The optical switching element includes a beam propagation element and an optical focusing system, where the beam propagation element has two mutually opposed end faces and where either the beam propagation element or the optical focusing system can be deflected and/or twisted transversely to an optical axis. The at least one input optical wave guide is attached to a first end face of the beam propagation element, and the output optical wave guides are attached to a second end face.

Abstract: Various embodiments of patch panel devices are enclosed. In some embodiments, signals received are in an electrical or optical form and converted to the other form. The converted signal is provided as an output signal. A version of the original input may also be provided as an input. A signal injector can inject a optical or electrical signal that is selectively injected into the output signals. Various embodiments also include sensor to detecting the connecting of an electrical or optical line.

Abstract: A method fabricates an optical switch comprising a microsphere coated with silicon nanocrystals. The method includes providing a silica optical fiber. The method further includes melting at least a portion of the fiber to form at least one silica microsphere. The method further includes coating the microsphere with a silica layer. The method further includes precipitating silicon nanocrystals within the silica layer by annealing the microsphere. The method further includes passivating the nanocrystals by annealing the microsphere in a hydrogen-containing atmosphere.

Abstract: An optical-switch driver circuit includes a pulse signal source and a voltage-applying circuit. The pulse signal source generates pulse waves that rise from a first voltage to a second voltage. The voltage-applying circuit, for one of the pulse waves, outputs a voltage higher than the third voltage, then outputs a voltage lower than the third voltage, and further outputs the third voltage.

Abstract: An optical switch including a light passageway having a changeable cross-sectional area, an activation light responsive piezoelectric element associated with the light passageway, the activation light responsive piezoelectric element being operative to change its shape in response to activation light impinging thereon and a conductive element operatively associated with the piezoelectric element for enhancing activation light responsiveness thereof, the activation light responsive piezoelectric element being associated with the light passageway and being operative such that changes in the shape of the piezoelectric element cause changes in the changeable cross-sectional area of the light passageway sufficient to govern the passage of light along the light passageway. Logic gates and logic functionality employing an optical switch are also described.

Abstract: A communication network in which p-cycles are used to rapidly, simply and efficiently provide for the direct replacement of failed fiber sections with whole replacement fibers. As long as the loss budgets are adequate, entire DWDM wavebands can be restored with no switching or manipulation of individual lightpaths. Following a substitution transient, the DWDM layer would never know the break happened. In environments where fiber switching devices are low cost, and ducts are full of dark fiber, this could provide a very low cost alternative to protect an entire DWDM transport layer (or working capacity envelope) against the single largest cause of outage.

Abstract: An optical communications system has a selective block/add capability of an optical channel. An optical beam separator receives and separates an input mixed optical beam into a separated optical channel and a remainder optical beam. A block/add unit receives as an input the separated optical channel and produces as an output a controllably modified separated optical channel. The block/add unit includes a source of an add input optical signal, and a controllable mirror. The controllable mirror is controllable between a first state in which the controllable mirror does not block the path of the separated optical channel, so that the separated optical channel is the output of the block/add unit, and a second state in which the controllable mirror blocks the path of the separated optical channel, and also reflects the add input optical signal as the output of the block/add unit.

Abstract: An optical fiber switch which may include first and second angled optical fibers having respective first and second end faces. Each of the first and second angled optical fibers may include a core having a core index of refraction, and a cladding surrounding the core and having a cladding index of refraction different than the core index of refraction. The optical fiber switch may further include a first index matching elastomeric solid layer having a proximal face coupled to the first end face and a distal face opposite the proximal face to be repeatably optically coupled to the second end face. The first index matching elastomeric solid layer may have an index of refraction profile matching an index of refraction of the core and the cladding. The optical fiber switch may also include at least one actuator for relatively moving the first and second angled optical fibers between a coupled position and an uncoupled position.

Abstract: A light switch is disclosed to turn on or off the light signal in a light channel by means of the response of piezoelectric material to the electric field of light in the light channel. The LIGHT TRIGGERED LIGHT SWITCH is a light switch that is actuated by light of sufficient power. Light of different frequencies may travel in a light channel together without hindering each other, as long as the channel is the right size for both frequencies of light. The light that actuates the switch may be a different frequency than the light signal that is switched on or off. Fiber optic communication channels are among the channels that these switches may be used for.