Abstract: An object of the present invention is to provide, in a local-light coupling technique for improving efficiency of work, an optical fiber local-light coupling apparatus configured to hardly affect communication between an OLT and an ONU while causing light to leak from a coated optical fiber in such an amount that makes it possible to confirm a communication state.

Abstract: A temperature compensation method for wavelength monitoring using spectrometers on photonic integrated chips and a related temperature-compensated wavelength monitoring device include an optical filter of the chip filters a source signal to provide at least one spectral reference line to a first spectrometer to detect thermal wavelength drifts thereof. At least one spectral line to be monitored is received by the same or another spectrometer of the chip to detect wavelength shifts thereof. The detected thermal drift of the reference line is compared to calibrated thermal drifts for the reference line which is associated with a calibrated thermal drift for the spectral response curve of the spectrometer receiving the spectral line to be monitored. A thermal drift rate for the response curve of the optical filter differs from a thermal drift rate for the response curve of the first spectrometer at least by an amount.

Abstract: The present disclosure provide for active boost in an electrical driver via a frequency comparator, configured to determine operational characteristics of an electrical circuit connected to an optical modulator based on a frequency difference between a ring oscillator and the clock signal; an electrical driver configured to drive a phase shift of a first optical signal carried on a first arm relative to a second optical signal carried on a second arm of an optical modulator, the electrical driver comprising: a first signal pathway, connected to the first arm of the optical modulator, wherein the first signal pathway includes: an adjustable gain inverter, electrically connected to first and second nodes; a fixed gain inverter, electrically connected to the first and second nodes; an inductor electrically connected between the second node and a third node; and a non-inverting amplifier connected between the third node and the first node.

Abstract: A laser inspection system is provided. A laser source emits a laser with a first spectrum and the laser is transmitted by a first optical fiber. A gain optical fiber doped with special ions is connected to the first optical fiber, and a light detector is provided around the gain optical fiber. When the laser with the first spectrum passes through the gain optical fiber, the gain optical fiber absorbs part of the energy level of the laser with the first spectrum, so that the laser with the first spectrum is converted to generate light with a second spectrum based on the frequency conversion phenomenon. The light detector detects the intensity of the light with the second spectrum, so that the power of the laser source can be obtained.

Abstract: A sensor architecture that uses fixed wavelength light and tunes a wavelength dependent response of a sensor may be used for detecting analytes in a wide range of applications. The sensor architecture is based on optical resonators or interferometers comprising optical waveguides. A resonance wavelength and/or transmission/reflection spectrum are affected by presence of an analyte adsorbed on a surface of the waveguide, and a setting of a phase modulator. The sensors include a sensor portion where part of the waveguide is exposed to a sample for sensing, and a phase modulator part. The phase modulator part may include a heater that is controlled to tune, or sweep, or modulate the resonant wavelength and/or spectrum of the sensor.

Abstract: An object of the present invention is to provide a versatile optical fiber lateral output device that can deal with various types of optical fiber core wires. An optical fiber input-output device according to the present invention includes: a first jig 11 including a recess portion 22 and an optical input-output means 51; a second jig 12 including a projection portion 23 and a guide groove 24; and a pressing unit 14 configured to apply a pressing force in a direction in which the recess portion 22 of the first jig 11 and the projection portion 23 of the second jig 12 approach each other so as to bend an optical fiber core wire 100. Letting R1 be a curvature radius of the recess portion 22 of the first jig 11, ?1 be a central angle of the recess portion 22, R2 be a curvature radius of the projection portion 23 of the second jig 12, and ?2 be a central angle of the projection portion 23, R2?R1 and ?2??1 are satisfied.

Abstract: An object is to provide a highly versatile local-light detection apparatus for an optical fiber capable of supporting various types of coated optical fibers.

Abstract: An optical logic gate decision-making circuit that combines non-linear materials, such as silicon nitride, on a silicon-on-insulator (SOI) substrate is described. Circuitry includes a ring cavity coupled to an input optical bus waveguide. The input optical bus waveguide receives an optical signal and passes the optical signal to the ring cavity. An electro-optical device, for instance a PN junction, is integrated within the ring cavity to modulate the optical signal such that an optical logic gate function is enabled. An output optical bus waveguide is also coupled to the ring cavity, which outputs the optical signal modified based on the optical logic gate function and based on a wavelength routing function. By using silicon nitride, the optical non-linearity of the materials enables an “all-optical” logic gate. Thus, the optical logic gate decision-making circuit is suitable for all-optical circuits, and support ultrafast optical signal processing and enabling packet switching of data.

Abstract: An optical cavity includes a ring defining an internal boundary and an external boundary, at least one of which is periodically modulated to define a gear-shaped configuration including a plurality of teeth, thereby enabling a plurality of slow-light modes. At least one physical defect may be defined within the periodically modulated internal boundary and/or external boundary to thereby enable at least one localized mode. At least one waveguide is coupled to the ring.

Abstract: A photonic device includes an optical coupler, a waveguide structure, a metal-dielectric stack, and a protection layer. The optical coupler is over a semiconductor substrate. The waveguide structure is over the semiconductor substrate and laterally connected to the optical coupler. A top of the waveguide structure is lower than a top of the optical coupler. The metal-dielectric stack is over the optical coupler and the waveguide structure. The metal-dielectric stack has a hole above the optical coupler. The protection layer lines the hole of the metal-dielectric stack.

Abstract: A microelectromechanical systems (MEMS)-tunable optical ring resonator is described herein. The ring resonator includes a resonator ring and a tuner ring, along with one or more springs. The springs may be internal or external, i.e., either within or outside the areal footprint of the resonator ring and the tuner ring. The one or more springs are configured to displace the tuner ring from the resonator ring by a desired gap based upon a desired resonant wavelength of the resonator ring. Tuning is implemented by applying a voltage to the ring resonator, with motion of the tuner ring causing a corresponding change in the effective index of the resonator ring. As the ring resonator is essentially a capacitive device, it draws very little power once tuning is achieved.

Abstract: A compact micro electrical mechanical actuated ring-resonator includes a bus waveguide disposed on a platform; a ring resonator disposed on the platform, including at least a first optical coupler, wherein the ring resonator is optically coupled with the bus waveguide; and a selective waveguide disposed on a piezoelectric cantilever mounted in a trench defined in the platform, wherein the selective waveguide includes a second optical coupler and is controllable to selectively adjust a coupling ratio between the first optical coupler with the second optical coupler by physically changing a distance between the first optical coupler and the second optical coupler.

Abstract: An apparatus includes a cladding layer and a plurality of waveguides. The cladding layer includes a central axis. The plurality of waveguides are disposed within the cladding layer and receive a light from a light source. The plurality of waveguides have refractive indices that are adjustable to change a mode of the light such that the mode of the light is steered towards the central axis.

Abstract: A silicon carbide-based micro-electro-mechanical system (MEMS) combined temperature-pressure sensor chip and a preparation thereof. The chip includes a peripheric pressure-measuring unit and a center temperature-measuring unit. The pressure-measuring unit includes a silicon carbide substrate with a raised island and a pressure sensitive diaphragm formed by etching the back of the substrate. The raised island and the pressure-sensitive diaphragm constitute a membrane-island structure. Four piezoresistive strips are arranged symmetrically along a circumferential direction of a root of the pressure-sensitive diaphragm and between the raised island and the pressure-sensitive diaphragm. The temperature-measuring unit includes the raised island and a thin-film thermocouple arranged thereon.

Abstract: A holographic display device with reduced color shifting in relation to different colors includes a display panel and a diffraction component. The display panel emits a first color light having a first emission efficiency and a second color light having a second emission efficiency. The first emission efficiency is greater than the second emission efficiency. The diffraction component on an optical path of the first and second colors of light diffracts the first color light at a first diffraction efficiency and the second color light at a second diffraction efficiency to generate a holographic image, the first diffraction efficiency is less than the second diffraction efficiency.

Abstract: A surface mountable laser driver circuit package is configured to mount on a host printed circuit board (PCB). A surface mount circuit package includes a lead-frame. A plurality of laser driver circuit components is mounted on and in electrical communication with the lead-frame of the surface mount circuit package. A dielectric layer is located between the lead-frame and the host PCB and includes portals through the dielectric layer each arranged to accommodate an electrical connection between the lead-frame and the host PCB. The lead-frame and the dielectric layer are arranged such that a first lead-frame portion and a first dielectric layer portal align with a first end of a host PCB trace configured to provide a current return path for the surface mount laser driver, and a second lead-frame portion and a second dielectric layer portal align with a second end of the host PCB trace.

Abstract: An integrated pluggable optical tap module configured to be coupled to a host interface of a network equipment for tapping a signal of an optical transport link comprises a first, a second optical interface, and an active optical receiver. The optical pluggable module also includes a passive optical tap for splitting a signal received from the first optical interface and transmitting the signal on the second optical interface and a copy of the signal to the active optical receiver. The active optical receiver converts said signal to an electrical signal for transmission to the host interface.

Abstract: An optical data communication system includes a plurality of resonator structures and a laser array that includes a plurality of lasers optically connected to the plurality of resonator structures. Each resonator structure has a respective free spectral wavelength range and a respective resonance wavelength. A maximum difference in resonance wavelength between any two resonator structures in the plurality of resonator structures is less than a minimum free spectral wavelength range of any resonator structure in the plurality of resonator structures. Each laser in the plurality of lasers is configured to generate continuous wave light having a respective wavelength. The laser array has a central wavelength. A variability of the central wavelength is greater than a minimum difference in resonance wavelength between any two spectrally neighboring resonator structures in the plurality of resonator structures.

Abstract: Structures for a wavelength-division multiplexing filter and methods of forming a structure for a wavelength-division multiplexing filter. A waveguide core of the wavelength-division multiplexing filter includes a first bend having a first curvature and a second bend having a second curvature different than the first curvature. The structure further includes a waveguide core region having a first end surface, a second end surface, and a bend arranged between the first and second end surfaces. The bend is positioned over the first bend of the waveguide core in an overlapping relationship.

Abstract: Provided is a beam steering apparatus including a driving pixel unit including a plurality of driving pixels that are respectively configured to supply a voltage or a current, a light modulator including a plurality of pixels corresponding to the plurality of driving pixels, each pixel of the plurality of pixels being configured to modulate incident light, and a wiring layer including a wiring structure configured to electrically connect the plurality of driving pixels to the plurality of pixels, wherein the wiring structure includes a first conductive wire connected to the plurality of driving pixels, a second conductive wire connected to the plurality of pixels, and at least one third conductive wire connected between the first conductive wire and the second conductive wire, and wherein the first conductive wire, the second conductive wire, and the at least one third conductive wire form a step structure.

Abstract: The present disclosure provide for active boost in an electrical driver via a frequency comparator, configured to determine operational characteristics of an electrical circuit connected to an optical modulator based on a frequency difference between a ring oscillator and the clock signal; an electrical driver configured to drive a phase shift of a first optical signal carried on a first arm relative to a second optical signal carried on a second arm of an optical modulator, the electrical driver comprising: a first signal pathway, connected to the first arm of the optical modulator, wherein the first signal pathway includes: an adjustable gain inverter, electrically connected to first and second nodes; a fixed gain inverter, electrically connected to the first and second nodes; an inductor electrically connected between the second node and a third node; and a non-inverting amplifier connected between the third node and the first node.

Abstract: A light guide component, a backlight module and a display device are provided. The light guide component includes: a first light guide member including a first surface and a second surface opposite to each other, where a plurality of lattice points for the light emission are arranged on the first surface; a plurality of second light guide members fixed to the second surface, where each second light guide member has a light-incidence side surface through which the light emitted by the edge-lighting light source enters into the second light guide member.

Abstract: An interferometer comprises a plurality of waveguide branches, where each waveguide branch of the plurality of waveguide branches is disposed to shift a phase of a corresponding portion of the optical beam. Each waveguide branch comprises a bus waveguide and a photonic resonator coupled to the bus waveguide, where the photonic resonator is disposed proximate to the bus waveguide, and where the photonic resonator is disposed to couple and circle the corresponding portion of the optical beam, at the photonic resonator, one or more times to shift the phase of the corresponding portion of the optical beam.

Abstract: A first optical connector, a second optical connector, a first lock member, and a second lock member are equipped. The first optical connector is attached to an electronic device, and corresponds to a receptacle. The second optical connector is attached to an end an optical cable, is fittable to the first optical connector, and corresponds to a plug. The first lock member is attached to the electronic device at a position corresponding to the first optical connector not to prevent fitting of the second optical connector to the first optical connector. The second lock member is attached to the optical cable at a position corresponding to the second optical connector not to prevent fitting of the second optical connector to the first optical connector. The second lock member is fittable to the first lock member in a state of fitting between the first optical connector and the first optical connector.

Abstract: A filtering apparatus formed by a plurality of channel systems. Each of the channel systems include an inlet port formed on an inlet side of the plate; no more than one outlet port formed on an outlet side of the plate; and a channel formed in the plate, the channel coupled to the inlet port and to the outlet port, wherein the ratio of the product of the capture area of the inlet ports of a channel system with the first transmissivity associated with the inlet ports to the product of the capture area of the outlet ports of a channel system with the second transmissivity associated with the outlet ports is greater than one. The channel system is configured to interact with objects of interest on a scale which is smaller than a value several orders of magnitude larger than the mean free path of an object of interest. Some plate embodiments are configured to interact with particles, such as air molecules, water molecules, or aerosols.

Abstract: A filtering apparatus formed by a plurality of channel systems. Each of the channel systems include an inlet port formed on an inlet side of the plate; no more than one outlet port formed on an outlet side of the plate; and a channel formed in the plate, the channel coupled to the inlet port and to the outlet port, wherein the ratio of the product of the capture area of the inlet ports of a channel system with the first transmissivity associated with the inlet ports to the product of the capture area of the outlet ports of a channel system with the second transmissivity associated with the outlet ports is greater than one. The channel system is configured to interact with objects of interest on a scale which is smaller than a value several orders of magnitude larger than the mean free path of an object of interest. Some plate embodiments are configured to interact with particles, such as air molecules, water molecules, or aerosols.

Abstract: A ring resonator electro-optical device includes a first silicon nitride waveguide and a second annular silicon waveguide that comprises a first section running under a second section of the first waveguide. The second waveguide also includes an annular silicon strip having a cross-section increasing in the first section from a minimum cross-section located under the second section.

Abstract: A robotic cleaner may include a body and an illuminator assembly. At least a portion of the illuminator assembly may be disposed within the body. The illuminator assembly may include an illuminator optic configured to emit light from an illumination surface and an illumination guide configured to direct light into the illuminator optic. The illumination guide may have a cavity. The cavity may include a reflecting surface and a directing surface, the reflecting surface being positioned opposite the directing surface.

Abstract: Structures for a wavelength-division multiplexing filter and methods of fabricating a structure for a wavelength-division multiplexing filter. The structure includes a first waveguide core, a second waveguide core laterally spaced from the first waveguide core, and a ring resonator arranged in a vertical direction over the first waveguide core and the second waveguide core. The ring resonator is also arranged in a lateral direction between the first waveguide core and the second waveguide core. The first and second waveguide cores are composed of a semiconductor material, such as single-crystal silicon, and the ring resonator is composed of a dielectric material, such as silicon nitride.

Abstract: A fiber termination assembly includes an optical fiber inserted into an optical ferrule disposed in an optical passageway of a heat conductive housing, the optical passageway providing an optical path aligned with the openings of the housing, the optical ferrule including a central bore concentrically disposed about the optical path and configured to receive a portion of a proximal end of the optical fiber therein, the optical ferrule and optical fiber secured in relation to the heat conductive housing with epoxy at a distal end of the optical ferrule, wherein the optical ferrule is transparent at a predetermined wavelength of light such that for light coupled into an input surface of the proximal end of the optical fiber at least a portion of the light propagating as cladding modes is stripped out of the optical fiber and transported to and dissipated in the heat conductive housing.

Abstract: Disclosed are methods of making a planar optical waveguide, the method including depositing an uncured waveguide material on a substrate, the uncured waveguide material having a first temperature when deposited and the uncured waveguide material having a density dependent on the temperature thereof; changing the temperature of at least a portion of the uncured waveguide material to a second temperature before curing, after curing, during curing or any combination thereof; and curing the uncured waveguide material to form the planar optical waveguide.

Abstract: The embodiment relates to an optical connection component including a bent optical fiber having a bent portion including a region where a curvature of the bent portion is maintained at 0.4 [1/mm] or more while substantially no bending stress remains. The bent optical fiber comprises a core, a first cladding, a second cladding, and a third cladding. Based on the third cladding, a relative refractive index difference ?1 of the core, a relative refractive index difference ?2 of the first cladding, and a relative refractive index difference ?3 of the second cladding satisfy relationships of ?1>?2>?3 and ?3 <?0.5[%]. The product V3 of the ?3 and a cross-sectional area S of the second cladding is less than ?200 [%·?m2]. The curvature in the bent portion is 0.6 [1/mm] or less over an entire length of the bent portion.

Abstract: In one example, a device includes a bus waveguide to carry a light of a carrier wavelength, a first ring waveguide with a first modulator, a first heater to adjust a resonance wavelength of the first ring waveguide, and a second ring waveguide with a second modulator. The first ring waveguide and the second ring waveguide are coupled to the bus waveguide and are to modulate the light of the carrier wavelength to impart one of at least four optical power levels to the light. In another example, a device includes, a bus waveguide, a first ring waveguide with a first modulator, and a second ring waveguide with a second modulator. The first ring waveguide and the second ring waveguide are coupled to the bus waveguide and are to modulate a light of a carrier wavelength to impart one of at least four optical power levels to the light.

Abstract: Provided is an optical splitter circuit capable of solving a problem that stability of an optical splitting ratio is low. An optical splitter 201 splits an input light beam. Arm waveguides 202 and 203 each have a width that decreases in a direction in which a light beam propagates and a tapered structure that propagates the light beam split by the optical splitter 201. Taper angles of these tapered structures differ from each other. The optical multiplexer 204 multiplexes the light beams from the arm waveguides 202 and 203 and then outputs them.

Abstract: The present disclosure relates to semiconductor structures and, more particularly, to grating couplers with multiple configurations and methods of manufacture. A structure includes: a grating coupler having a sawtooth configuration provided over a semiconductor slab; and a back end of line (BEOL) stack over the sawtooth configuration of the grating coupler.

Abstract: A method, apparatus and system for minimally intrusive fiber identification includes imparting a time-varying modulation onto an optical signal propagating in an optical fiber and subsequently detecting the presence of the time-varying modulation in the optical signal transmitting through the fiber to identify the fiber. In a specific embodiment of the invention, a time-varying curvature is imposed on the fiber to be identified and the presence of the resultant time variation in the transmitted power of a propagating optical signal is subsequently detected for identification of the manipulated fiber.

Abstract: A speckle reduction apparatus (300) based on Mie scattering and perturbation drive is disclosed. The speckle reduction apparatus (300) comprises an optical reflective chamber (302) having an incident-light coupling device (301) and an exiting face (303) disposed thereon, and an optical device (308) which faces the incident-light coupling device (301) of the optical reflective chamber (302). The inner walls of the optical reflective chamber (302), except for the wall of light transparent exiting face (303), are mirror surfaces. The optical reflective chamber (302) is fully filled with transparent material (401) having medium particles (402) dispersed therein, which are able to induce Mie scattering of the incident laser. Either or both of the optical reflective chamber (302) and the optical device (308) are provided with a perturbation-sensitive device.

Abstract: A microwave energy delivery and measurement system, including a microwave generator and a microwave energy delivery device, for performing medical procedures, and a remote power coupler system for measuring one or more parameters of the microwave energy signal including a remote RF sensor housed in the microwave energy delivery device and a power coupler processer coupled with the processing unit of the microwave energy delivery device.

Abstract: An optical component includes: a high-relative-refractive-index-difference optical fiber; a single-mode optical fiber fusion-spliced to the high-relative-refractive-index-difference optical fiber, a mode-field diameter of the single-mode optical fiber being greater than a mode-field diameter of the high-relative-refractive-index-difference optical fiber at a wavelength of 1550 nm; and an optical device connected to an end surface of the high-relative-refractive-index-difference optical fiber where the single-mode optical fiber is not fusion-spliced. A total of a connection loss between the high-relative-refractive-index-difference optical fiber and the single-mode optical fiber at the wavelength of 1550 nm and a connection loss between the high-relative-refractive-index-difference optical fiber and the optical device at the wavelength of 1550 nm is less than a connection loss at the wavelength of 1550 nm when the single-mode optical fiber is connected to the optical device directly.

Abstract: A coated substrate including a thin film of a transition metal dichalcogenide and associated methods are shown. In one example, the substrate is a semiconductor wafer. In one example, the thin film is atomically thin, and the substrate is a number of centimeters in diameter. In one example a crystalline structure of the thin film is substantially 2H hexagonal.

Abstract: Herein presents an optical fiber microwire device, wherein the device comprising a silica tube, an optical fiber (2) inserted into the silica tube (1) and pigtailed at two sides, wherein the two ends of the silica tube (1) are fused with the optical fiber (2) to form a solid structure, or the two ends of the silica tube (2) are filled with silica rods (3), silica capillaries (4) or segments of optical fibers and fused to form a solid structure. The silica tube (1) together with the optical fiber (2) inside is then tapered to form a micro structure region. Therefore, the micro structure region is consisted of the tapered optical fiber as the microstructure core, tapered silica tube, and the air in between. This invention combine the manufacture of optical fiber microwire and the sealing process, avoiding the disadvantages of the conventional tapered optical fiber microwire, such as fragile mechanical structure, and sensitive to the outer environment variations.

Abstract: An optical fiber cable assembly includes an optical tracer fiber, an optical data transmission fiber, and a cable jacket. The optical tracer fiber defines a tracer scattering profile having a scattering loss of >15 dB/km at a tracer wavelength or wavelength range ?T that lies in a visible spectrum. The optical tracer fiber is wound about a longitudinal axis of the optical fiber cable assembly and is either physically coupled to the cable jacket or contained within an inside diameter of the cable jacket. The cable jacket may be engineered to generate light at an optically visible shifted tracer wavelength or wavelength range ?T* from visible light at the tracer wavelength or wavelength range ?T. The cable jacket may include an optically reflective material such that a portion of dispersed visible light from the optical tracer is reflected by the optically reflective material of the cable jacket.

Abstract: A non-reciprocal device incorporating metamaterials which exhibit non-reciprocity through angular momentum biasing. The metamaterial, such as a ring resonator, is angular-momentum biased. This is achieved by applying a suitable mechanical or spatio-temporal modulation to resonant inclusions of the metamaterial, thereby producing strong non-reciprocity. In this manner, non-reciprocity can be produced without requiring the use of large and bulky magnets to produce a static magnetic field. The metamaterials of the present invention can be realized by semiconducting and/or metallic materials which are widely used in integrated circuit technology, and therefore, contrary to magneto-optical materials, can be easily integrated into the non-reciprocal devices and large microwave or optical systems. The metamaterials of the present invention can be compact at various frequencies due to the enhanced wave-matter interaction in the constituent resonant inclusions.

Abstract: Disclosed is a technology related to an optical waveguide which is insensitive to an ambient temperature and is capable of adjusting a wavelength error due to a manufacturing processing deviation. The optical waveguide includes: a clad layer positioned on a substrate; a core layer positioned between the substrate and the clad layer, and including patterns positioned in a first region and a second region; and a wavelength adjusting unit positioned in the first region between the substrate and the clad layer, and configured to adjust a wavelength of an optical signal propagated through patterns passing through the first region based on received electric energy, in which the clad layer includes a material having a Thermo-Optic Coefficient (TOC) with an opposite sign to that of a material included in the core layer.

Abstract: Described embodiments include photonic integrated circuits and systems with photonic devices, including thermal isolation regions for the photonic devices. Methods of fabricating such circuits and systems are also described.

Abstract: An optical modulator includes a waveguide Mach-Zehnder interferometer having a first and a second input and a first and a second output, a feedback waveguide segment connecting the second output with the second input, and a traveling-wave electrode; wherein the Mach-Zehnder interferometer, feedback waveguide segment and traveling-wave electrode are substantially arranged at or adjacent the perimeter of a smooth curve defining a closed geometric figure, the traveling-wave electrode extending along at least 50% of the length of the perimeter of the smooth curve.

Abstract: The present invention provides an apparatus comprising a plurality of planar waveguides and method of making the same. The apparatus includes first, second, and third layers formed above a substrate and adjacent each other. The second layer is formed between the first and third layers of a material and comprises a plurality of organofunctional siloxane-based resin or polymer waveguides. Each waveguide has an input on one edge of the second layer and an output on one edge of the second layer so that the input and output are on different line-of-sight paths. The plurality of waveguides is formed such that intersections of the waveguides occur at approximately right angles and the outputs and inputs located on edges that are opposite one another are offset from each other in a direction that is perpendicular to the direction of the corresponding input or output signal.

Abstract: Optical fiber anchors accomplishing low creep confinement or fixing of a section of optical fiber in an assembly compact enough to be used conveniently as an anchor or as an enabling part of a strain or temperature sensor while retaining low optical losses and the original buffer coating to prevent the fiber from being exposed to abrasion and other influences that could lead to breakage. A rigid body is used that is mechanically stiff and hard enough to prevent the fiber from cutting into it or distorting the medium or substrate when subjected to stress, even over a long period of years. Trapping can be accomplished by molding the bent fiber into the substrate or body, adhesively bonding or soldering the optical fiber into a confining curved groove in a body or substrate.

Abstract: A broadly tunable optomechanical apparatus includes a resonator component consisting of two coupled optical microring resonators disposed in a stacked relationship, an input waveguide disposed adjacent a periphery of the resonator component, and a control signal waveguide coupled to the resonator component or the input signal waveguide. A broadband optical switch includes a plurality of resonator components each of which corresponds to a selected signal wavelength, predetermined by the geometry and design of the resonator component, and a respective plurality of output signal waveguides, and a respective plurality of a control signal waveguides each coupled to a respective resonator component. Associated tuning and switching methods and applications are disclosed.

Abstract: Apparatus and method are provided for transmitting at least one electro-magnetic radiation is provided. In particular, at least one optical fiber having at least one end extending along a first axis may be provided. Further, a light transmissive optical arrangement may be provided in optical cooperation with the optical fiber. The optical arrangement may have a first surface having a portion that is perpendicular to a second axis, and a second surface which includes a curved portion. The first axis can be provided at a particular angle that is more than 0° and less than 90° with respect to the second axis.