FIBER OPTICAL COMMUNICATION SYSTEM USING ASYMMETRIC OPTICAL WAVEGUIDE SPLITTER

    公开(公告)号:US20210258077A1

    公开(公告)日:2021-08-19

    申请号:US17260898

    申请日:2019-07-17

    Abstract: An optical communications system includes a laser transmitter to generate an optical signal and a first optical fiber network coupled to transmit the optical signal from the laser transmitter system. A first latchable, asymmetric coupler is disposed along the first optical fiber network to receive the optical signal, and has a first tap output that receives a selected and alterable first fraction of the optical signal. A second latchable, asymmetric coupler is disposed along the first optical fiber network to receive the optical signal from the first latchable asymmetric coupler and has a second tap output that receives a selected and alterable second fraction of the optical signal incident at the second latchable. In certain embodiments the first and second couplers are capable of operating at any of at least three tapping fractions.

    INTEGRATED OPTICAL SWITCHING AND SPLITTING FOR OPTICAL NETWORKS

    公开(公告)号:US20210124163A1

    公开(公告)日:2021-04-29

    申请号:US16638705

    申请日:2018-08-16

    Abstract: An optical circuit that has a first input waveguide, at least a first output waveguide and an optical path between the first input waveguide and the at least a first output waveguide. A first totally internally reflecting (TIR) waveguide switch lies on the optical path between the first input waveguide and the at least a first output waveguide. A wavelength selective filter is disposed on the optical path between the first input waveguide and the at least one output waveguide, the wavelength selective filter being transmissive for light in a first wavelength range and reflective for light in a second wavelength range.

    METHODS FOR COUPLING OPTICAL FIBERS TO OPTICAL CHIPS WITH HIGH YIELD AND LOW-LOSS

    公开(公告)号:US20190331868A1

    公开(公告)日:2019-10-31

    申请号:US16478742

    申请日:2018-01-17

    Abstract: An optical fiber ribbon cable is formed using thermally expandable core (TEC) fibers. Expanded optical cores are formed in sections of TEC fibers, so that each section of TEC fiber comprises a first region having an unexpanded core, a second region having an expanded core, and a tapered region between the first region and the second region. The respective sections are cleaved to length and formed into a ribbon. A hybrid optical fiber ribbon cable can be made by fusing single mode optical fibers of a single mode fiber ribbon cable with TEC fibers of a TEC fiber ribbon cable using a laser. The laser is also used to form tapered core regions in the TEC fibers to reduce coupling losses between the TEC fibers and the single mode fibers.

    INTEGRATED OPTICAL WAVELENGTH DIVISION MULTIPLEXING DEVICES

    公开(公告)号:US20220390676A1

    公开(公告)日:2022-12-08

    申请号:US17771176

    申请日:2020-10-23

    Abstract: Optical wavelength division multiplexing (WDM) devices include an optical chip having a number of waveguides therein, with a common optical fiber and single wavelength channel optical fibers optically coupled to the waveguides. Wavelength sensitive filters are disposed between the chip and the fibers, or across waveguides within the chip to reflect light at certain wavelengths and to transmit light at other wavelengths. In sonic embodiments, all of the fibers are located at the same end of the chip, in others the common fiber is located at one side of the chip and the single channel fibers located at another side, while in others the common fiber is located at a first side of the chip and the single channel fibers are located either at the first side of the chip or at a second side of the chip.

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