Optical notch filter system with independent control of coupled devices

    公开(公告)号:US10509173B2

    公开(公告)日:2019-12-17

    申请号:US15761781

    申请日:2015-09-22

    Abstract: In the examples provided herein, a system has a first racetrack resonant waveguide structure, positioned to enable an input light signal to couple from a first waveguide; and a second racetrack resonant waveguide structure, positioned to enable the input light signal to couple between the first racetrack resonant waveguide structure and the second racetrack resonant waveguide structure, and further positioned to enable an output light signal to couple from the second racetrack resonant waveguide structure to a second waveguide. The system also has a primary heating unit, positioned to heat a primary region including a first portion of the first racetrack resonant waveguide structure and a first portion of the second racetrack resonant waveguide structure, to change a central frequency and a passband width for the system.

    OPTICAL SWITCHING BETWEEN WAVEGUIDES BY ADJACENT RESONANT STRUCTURE COUPLING

    公开(公告)号:US20190170943A1

    公开(公告)日:2019-06-06

    申请号:US15831733

    申请日:2017-12-05

    Abstract: Examples described herein relate to an optical switching device wherein a racetrack resonant structure is positioned to determine a frequency passband by coupling. In some examples, a first waveguide receives an input light signal. A second waveguide is positioned to enable the input light signal to couple between the first waveguide and the second waveguide through a first coupling gap. The racetrack resonant structure is positioned adjacent to the first coupling gap to enable the input light signal to couple between one of the first waveguide and the second waveguide and the racetrack resonant structure through a second coupling gap. Thus, the racetrack resonant structure is to determine the frequency passband such that a first portion of the input light signal that coincides with the frequency passband is output by the first waveguide, and a second portion of the input light signal that does not coincide with the frequency passband is output by the second waveguide.

    Optical switching between waveguides by adjacent resonant structure coupling

    公开(公告)号:US10288811B1

    公开(公告)日:2019-05-14

    申请号:US15831733

    申请日:2017-12-05

    Abstract: Examples described herein relate to an optical switching device wherein a racetrack resonant structure is positioned to determine a frequency passband by coupling. In some examples, a first waveguide receives an input light signal. A second waveguide is positioned to enable the input light signal to couple between the first waveguide and the second waveguide through a first coupling gap. The racetrack resonant structure is positioned adjacent to the first coupling gap to enable the input light signal to couple between one of the first waveguide and the second waveguide and the racetrack resonant structure through a second coupling gap. Thus, the racetrack resonant structure is to determine the frequency passband such that a first portion of the input light signal that coincides with the frequency passband is output by the first waveguide, and a second portion of the input light signal that does not coincide with the frequency passband is output by the second waveguide.

    Transmitting an optical signal including heterodyne combinations

    公开(公告)号:US11533110B1

    公开(公告)日:2022-12-20

    申请号:US17443960

    申请日:2021-07-29

    Abstract: Examples relate to a transmitter for transmitting an optical signal including multiple frequencies. The transmitter includes a waveguide to receive a multi-frequency optical signal and a plurality of resonators coupled to the waveguide. Each resonator of the plurality of resonators selectively filters an optical signal of a frequency from the multi-frequency optical signal. The transmitter includes an optical combiner coupled to the plurality of resonators to receive optical signals filtered by the plurality of resonators and generate an output optical signal including a heterodyne combination based on the optical signals received from the plurality of resonators.

    WAVELENGTH MODULATION FOR IMPROVED OPTICAL LINK BIT ERROR RATE

    公开(公告)号:US20210359760A1

    公开(公告)日:2021-11-18

    申请号:US17302681

    申请日:2021-05-10

    Abstract: An optical transceiver module includes an optical transceiver and a controller. The optical transceiver has a ring filter configured to transmit optical signals from or receive optical signals for the optical transceiver module. The controller is configured to: detect a carrier frequency at the optical transceiver; detect a data signal frequency of data at the optical transceiver; determine a bit error rate of the data; and in response to determining that the bit error rate of the data is greater than a threshold, periodically vary a central wavelength of the ring filter at a frequency at least three orders slower than the data signal frequency.

    Chip on wafer on substrate optoelectronic assembly and methods of assembly thereof

    公开(公告)号:US11114409B2

    公开(公告)日:2021-09-07

    申请号:US16777569

    申请日:2020-01-30

    Abstract: Examples herein relate to optoelectronic assemblies. In particular, implementations herein relate to an optoelectronic assembly formed via a chip on wafer on substrate (CoWoS) process. The optoelectronic assembly includes a substrate, an interposer, and an electronic integrated circuit (EIC). Each of the substrate, interposer, and EIC includes opposing first and second sides. The EIC is flip-chip assembled to the first side of the interposer, and the interposer with the EIC assembled thereto is flip-chip assembled to the first side of the substrate. An overmold layer extends over the first side of the interposer and encapsulates the EIC. The overmold layer includes a cavity such that a region of the first side of the interposer is exposed. An optical component is positioned within the cavity and coupled to the first side of the interposer.

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