Abstract:
An optical transceiver may include pairs of lasers, each laser of a particular pair generating light at the same wavelength and each pair of lasers generating light at different wavelengths. The light from the lasers may be demultiplexed onto a pair of outputs, with each output receiving light from different lasers of each pair of lasers.
Abstract:
A switch module includes a switch integrated circuit (IC), a photonic integrated circuit (PIC), and a planar lightwave circuit (PLC). The PIC may include a plurality of light sources, an optical splitter, and a plurality of modulators. A dual MEMS may be used to align lens arrays, which may be used to couple light from the PIC to the PLC.
Abstract:
An optical assembly includes a combination of laser sources emitting radiation, focused by a combination of lenses into optical waveguides. The optical waveguide and the laser source are permanently attached to a common carrier, while at least one of the lenses is attached to a holder that is an integral part of the carrier, but is free to move initially. Micromechanical techniques are used to adjust the position of the lens and holder, and then fix the holder it into place permanently using integrated heaters with solder.
Abstract:
A switch module includes a switch integrated circuit (IC), an InP chip, and a planar lightwave circuit (PLC). The InP chip may include a plurality of light sources, an optical splitter, and a plurality of modulators.
Abstract:
An optical transceiver assembly includes a circuit board and a PLC, both performing transmission and reception functions, in a common volume of a common housing, electro-optical conversion elements, for example lasers and/or photodetectors. Lasers may be on a further substrate on the circuit board.
Abstract:
A directly driven laser includes multiple contacts, with at least one of the contacts for injecting current into the laser such that the laser reaches at least a lasing threshold and at least one of the contacts for providing a data signal to the laser. In some embodiments a differential data signal is effectively provided to a front and a rear section of the laser, while lasing threshold current is provided to a central portion of the laser.
Abstract:
A directly driven laser includes multiple contacts, with at least one of the contacts for injecting current into the laser such that the laser reaches at least a lasing threshold and at least one of the contacts for providing a data signal to the laser. In some embodiments a differential data signal is effectively provided to a front and a rear section of the laser, while lasing threshold current is provided to a central portion of the laser.
Abstract:
An optical coupler couples light from waveguides of a photonic integrated circuit (PIC) to output waveguides, for example waveguides of a planar lightwave circuit (PLC). The optical coupler includes optical elements having different optical properties. In some embodiments the optical properties vary to account for waveguide angled facets in the PIC, and in some embodiments the optical properties vary to account for the PIC being mounted at an angle compared to the PLC, or optical coupler.