Abstract: An optical module as disclosed includes an aligning bridge, an optical de-multiplexer and a lens array. The aligning bridge has a first section and a second section opposite to the first section. The optical de-multiplexer is on the first section of the aligning bridge. The optical de-multiplexer comprises a plurality of filters configured to transmit a plurality of light beams of different wavelengths. The lens array is on the second section of the aligning bridge. The lens array comprises a plurality of input ports aligned with the filters and configured to receive the light beams from the filters.

Abstract: Embodiments of the disclosure pertain to a system for transferring an optical signal from one photonics chip or integrated circuit (PIC) to another. The system includes a first PIC having (i) an optical emitter or optical transmission mechanism and (ii) a focusing mirror thereon, and a second PIC having an optical receiver and a reflecting mirror thereon. The reflecting mirror is configured to reflect light transmitted by the optical emitter or optical transmission mechanism back to the first PIC. The focusing mirror is configured to (i) further reflect the light reflected by the reflecting mirror and (ii) focus the further reflected light on the optical receiver. Methods of using and manufacturing the system are also disclosed.

Abstract: Embodiments pertain to an optical transmitter, including a thermally unregulated light emitting device and a sloped or graded passband filter. The light emitting device is configured to receive a bias current and output an optical signal within a wavelength band. The sloped or graded passband filter is configured to attenuate an output power of the optical signal in the wavelength band. The light emitting device has a maximum bias current limit, a maximum operating temperature limit, and maximum and minimum output power limits, and the sloped or graded passband filter has an insertion loss in the wavelength band that decreases as the light emitting device temperature increases and/or the optical signal wavelength increases within the wavelength band. The attenuated optical signal is within the maximum and minimum output power limits when the bias current is at or below the maximum bias current limit and the light emitting device outputs the optical signal at or below the maximum operating temperature limit.

Abstract: An optical phase shifter and a method of making the same are disclosed. The phase shifter includes a substrate, a p-doped electrode and an n-doped electrode on the substrate, a first doped semiconductor layer on the p-doped electrode or the n-doped electrode and in electrical contact with the other electrode, a second doped semiconductor layer on the first doped semiconductor layer, a first vertical region electrically connecting the second doped semiconductor layer with the one electrode, and a cladding layer on or over the second semiconductor layer, the first vertical region, and at least a first sidewall of each of the first and second semiconductor layers. The p-doped electrode and the n-doped electrode form a p-n junction at an interface therebetween. The first and second doped semiconductor layers have the same doping type as the other electrode and the one electrode, respectively.

Abstract: Embodiments of the disclosure pertain to an optical transmitter and/or receiver comprising an electrical signal generator configured to generate an electrical signal that is unshielded or unshieldable at a predetermined frequency, a filter downstream from the electrical signal generator configured to reduce an amplitude of electromagnetic interference (EMI) at the predetermined frequency below a predetermined maximum value, an interface through which the EMI can pass in the absence of the filter, and an optical component configured to receive the electrical signal or provide an input signal to the electrical signal generator. A method of reducing EMI in an optical transmitter and/or receiver using the electrical signal generator, the filter and the optical component is also disclosed.

Abstract: Embodiments of the disclosure pertain to an optical transmitter comprising a laser configured to generate an optical signal from a single-ended electrical signal, a housing or (sub)assembly containing the laser, a driver configured to generate the single-ended electrical signal, a direct current (DC) return path, and an alternating current (AC) return path. The laser has a DC power pin, and the DC power has a DC component and an AC component. The driver has a first impedance at a first output through which the single-ended electrical signal passes. The housing or (sub)assembly has a second impedance matching the first impedance. The DC return path comprises an inductor and is configured to carry or conduct the DC component of the DC power from the laser (e.g., to an input pin on the driver). The AC return path is configured to carry or conduct the AC component of the DC power from the laser. Methods of using and manufacturing the same are also disclosed.

Abstract: Embodiments of the disclosure pertain to an optical modulator including an m*n optical coupler, first and second waveguides coupled or connected to the m*n optical coupler, a first phase shifter coupled to the first waveguide, and first and second loop mirrors at respective ends of the first and second waveguides opposite from the m*n optical coupler. The m*n optical coupler is configured to combine substantially similar or identical continuous light beams (at least one of which may be phase-shifted) returned through the first and second waveguides by the first and second loop mirrors to form a modulated optical signal. A compound optical modulator, a modulated or modulatable laser, and methods of using and manufacturing the optical modulators, are also disclosed.

Abstract: The present invention relates to a de-latching mechanism and optical module using the same. The de-latching mechanism includes a pull rod and a de-latching sheet or plate. The pull rod is configured to cause the de-latching sheet or plate to slide by rotating or sliding, thereby de-latch the optical module. The present invention provides a de-latching mechanism and optical module using the same with a simple structure and various convenient ways to de-latch the optical module, which can use a smaller rotational angle, simple condition(s) for de-latching and less de-latching environment support.

Abstract: A bidirectional optical subassembly, an optical transceiver including the same, and methods of making and using the same are disclosed. The optical subassembly includes a photodiode configured to receive an incoming optical signal, a transmitter configured to transmit an outgoing optical signal, and a passive optical signal processing unit including a filter and a mirror. The filter is at a first predetermined angle relative to an optical path of the outgoing optical signal and is configured to (i) reflect one of the outgoing optical signal and the incoming optical signal and (ii) allow the other of the outgoing optical signal and the incoming optical signal to pass through. The mirror is configured to reflect the one of the outgoing optical signal and the incoming optical signal at a second predetermined angle. The first predetermined angle is adapted to reduce filter insertion losses.

Abstract: Embodiments of the disclosure pertain to an electromagnetic interference shielding device comprising a base plate, first and second lateral plates connected and oriented orthogonally to the base plate, and at least one top plate connected to and oriented orthogonally to the first and second lateral plates, and a method of manufacturing such an electromagnetic interference shielding device. The top plate(s) further include (i) first and second front or side bends extending toward the base plate from a first side of the top plate(s) and (ii) first and second rear bends extending toward the base plate from a second side of the top plates. The second side of the top plate(s) is different from the first side.

Abstract: The present invention relates to an optical module and optical module system using the same. The optical module comprises a transceiving unit, an antenna and an MCU. The transceiving unit receives control commands from one or more control computers via the antenna and transfers them to the MCU. Then the MCU processes the control commands and provides feedback information to the one or more control computers through the transceiving unit. In the optical module of the present invention, as a result of an additional IOT wireless unit, the optical module is capable of communicating with remote control computers, thereby achieving remote testing and control for optical modules, instead of using conventional control methods for optical modules.

Abstract: The present disclosure relates to a latch fitting, a de-latching mechanism and an optical module using the same. The latch fitting includes a tapered end, a latch body and a latch tail in serial connection. The latch body includes a spindle. The latch body can rotate around the spindle. The latch tail comprises a first de-latching portion configured to de-latch the optical module by sliding movement. The present latch fitting, de-latching mechanism and optical module provide multiple de-latching methods with an easy and simple operation. Also, the present latch fitting and de-latching mechanism provide an improved solution for preventing optical modules from being damaged relative to conventional de-latching methods.

Abstract: An optical-to-optical (O2O) signal path, O2O and hybrid transceivers including the same, a network system or device including one or more of the transceivers, and methods of making and using the same are disclosed. The O2O signal path generally includes first and second ports and an optical amplifier configured to receive an optical signal from a host or a network through the first port and provide an amplified optical signal for the other of the host and the network through the second port. In some examples, the O2O signal path further includes one or more optical isolators and/or clock and data recovery functions. The optical signals in the O2O signal path are processed entirely in the optical domain. The transceiver includes the O2O signal path and may include an optoelectronic signal path, a pass-through connector, or a second O2O signal path.

Abstract: Optical multiplexers, optical demultiplexers, optical modules including the same, and methods of making and using the same are disclosed. The optical multiplexers include first and second structural blocks and a beam combiner. The first and second structural blocks each include at least one mirror and at least one filter, and are configured to combine a plurality of individual optical signals into a multi-channel optical signal. The beam combiner includes one or more mirrors and one or more filters, and is configured to combine the multi-channel optical signals into a further multi-channel optical output signal having the same number of channels as the multi-channel optical signals. The optical demultiplexers are structurally similar to the optical multiplexers, but provide a complementary or reverse function.

Abstract: An optical or optoelectronic receiver, an optoelectronic transceiver including the same, and a method and system for protecting a photodetector in the same are disclosed. The method of protecting a photodetector generally includes providing a control voltage to the photodetector so that a current flows through the photodetector, and determining that a transient event has occurred or a transient state exists in the receiver. During the transient event or transient state, the method maintains the control voltage at a normal operating voltage when the current through the photodetector is at or below a predetermined threshold current, and switches the control voltage to a safe mode voltage when the current through the photodetector is above the predetermined threshold current.

Abstract: A waveguide array module according to some embodiments of the present disclosure includes a lens array and a waveguide component. The lens array is configured to output a plurality of light beams of different wavelengths. The waveguide component includes a plurality of waveguide channels configured to respectively direct the plurality of light beams. Each of the waveguide channels includes an input port on a first surface facing the lens array and configured to receive a respective one of the light beams, and an output port on a second surface non-parallel to the first surface and configured to output the respective one of the light beams.

Abstract: Embodiments of the disclosure pertain to an optical or optoelectronic transceiver comprising an optical or optoelectronic receiver, an optical or optoelectronic transmitter, a plurality of electrical devices, a housing, and a heat sink having a non-planar surface. The optical or optoelectronic receiver includes a receiver optical subassembly (ROSA). The optical or optoelectronic transmitter includes a transmitter optical subassembly (TOSA). The electrical devices are configured to provide or control one or more functions of the optical or optoelectronic receiver and the optical or optoelectronic transmitter. The housing is over and/or enclosing the optical or optoelectronic receiver and the optical or optoelectronic transmitter. The housing includes a first section and a second section, and is configured to (a) be removably insertable into a cage or socket of a host device and (b) position the first section of the housing outside the cage or socket when the housing is inserted in the cage or socket.

Abstract: An optical transmitter including first, second, third and fourth signal generators configured to transmit first, second, third and fourth optical signals, a first filter configured to combine the first optical signal with the second optical signal to form a first multi-channel signal, a second filter configured to combine the third optical signal with the first multi-channel signal to form a second multi-channel signal, and a third filter configured to combine the fourth optical signal with the second multi-channel signal to form a third multi-channel signal. The first optical signal and the third optical signal have parallel optical axes, as do the second optical signal and the fourth optical signal. The second and fourth optical signals are at an angle of from 5° to 40° with respect to the first and third optical signals and are generally propagated in an opposite direction from the first and third optical signals.

Abstract: An optical subassembly, optical or optoelectronic receivers and transceivers including the same, and methods of making and using the same are disclosed. The optical subassembly includes a mirror configured to reflect an incoming optical signal at a first predetermined angle, a lens configured to receive the incoming optical signal from the mirror and focus the incoming optical signal onto a target, and an optical mount comprising at least one first surface configured to support the mirror, at least one second surface configured to support and/or secure the lens at a second predetermined angle, and a structural block configured to position and/or arrange (i) the at least one first surface at a third predetermined angle related to the first predetermined angle and (ii) the at least one second surface at the first and/or second predetermined angle. The first and/or second predetermined angle(s) are adapted to reduce a reflectance of the incoming optical signal.

Abstract: A WDM multiplexing/demultiplexing system includes a de-multiplexer configured to separate and guide light beams from an incident ray having a plurality of wavelengths to corresponding lenses on an optical device, a multiplexer configured to guide light beams from optical transmitters having various wavelengths through the corresponding lenses on the optical device and combine the light beams, a lens array including the corresponding lenses to receive and/or transmit the light beams from or to the de-multiplexer and multiplexer, and a light beam collimator configured to function with the multiplexer and de-multiplexer. The light beams received or transmitted by the light beam collimator and the light beams transmitted or received from or to the multiplexer and de-multiplexer are collinear. The light beam collimator and multiplexer/de-multiplexer can be easily positioned to predetermined or designed positions, thereby providing light beams output through the lenses in a plastic optical device.