摘要:
A MEMS optical switch-based LiDAR beam steering unit may comprise an optical switching array comprising two or more translatable optical switch gratings. The two or more translatable optical switch gratings may be arranged in a foveal pattern. Each of the two or more translatable optical switch gratings may have an associated MEMS structure operative to selectively translate the optical switch grating between a first position and a second position, and a first waveguide associated with the translatable optical switch grating. The grating being in the first position may cause the grating to be sufficiently close to the first waveguide to produce a strong optical coupling between the grating and the first waveguide. The grating being in the second position may cause the grating to be sufficiently far from the first waveguide to produce a weak optical coupling between the grating and the first waveguide.
摘要:
Methods and systems for all optical tunable equalizers may include an optical modulator comprising an input waveguide, first and second directional couplers, phase modulators, an optical delay, and an optical attenuator. The optical modulator may be operable to receive an input optical signal via the input waveguide, couple a portion of the input optical signal to a second waveguide via the first directional coupler, modulate a phase of optical signals in the input waveguide and the second waveguide using the phase modulators, and couple a feedback optical signal to the first directional coupler via the second directional coupler, the optical delay, and the optical attenuator. The optical modulator may be operable to communicate an output signal of said optical modulator from a first output of the second directional coupler. The optical modulator may be operable to communicate the feedback optical signal from a second output of the second directional coupler.
摘要:
Methods and apparatus for providing all-optically generated, on-chip propagated and high-efficiency tunable plasmons are described. The plasmon generating apparatus includes a graphene based silicon nitride waveguide (GSiNW) utilizing 'C+L' band light sources and detectors that take advantage of the surface 2nd nonlinearity on graphene. The optical generation is accomplished via one or more optical communication lasers through the difference-frequency generation process. The THz frequency and intensity is tunable via an external gate voltage. Using such a device the optical to THz conversion may be made at least an order of magnitude more efficient than prior THz sources, and can be used to make chip-scale room-temperature THz sources, switches, modulators and detectors based on graphene.
摘要:
A fiber optic cable with a connector for a rugged environment, including a connector assembly, a fiber optic cable entering a back side of the connector assembly, wherein the fiber optic entering the back side of the connector assembly is sealed to the back side of the connector, a transceiver housed in the connector assembly, wherein the fiber optic cable is attached to the transceiver, a power converter packaged in the connector assembly, wherein the power converter is electrically connected to the transceiver, and an electrical connection electrically connected on a first side to an electrical signal contact in the transceiver and on a second side to a face-side electric contact of the connector assembly. Related apparatus and methods are also described.