OUT-OF-BAND COMMUNICATION CHANNEL FOR SUBCARRIER-BASED OPTICAL COMMUNICATION SYSTEMS
Granted: October 24, 2024
Application Number:
20240356645
An example system includes a hub transceiver and a plurality of edge transceivers. The hub transceiver is operable to transmit, over a first communications channel, a first message to each of the edge transceivers concurrently, including an indication of available network resources on an optical communications network. Each of the edge transceiver is operable to transmit, transmit, over a second communications channel, a respective second message to the hub transceiver including an…
PHOTONIC INTEGRATED CIRCUIT INCLUDING SEMICONDUCTOR OPTICAL AMPLIFIERS
Granted: August 29, 2024
Application Number:
20240291568
Consistent with the present disclosure, a transceiver is implemented as a photonic integrated circuit (PIC) that includes a transmitter and a receiver. A laser is also provided that provides light to a splitter, which supplies a first portion of the light to the transmitter and a second power of the light to the receiver. Semiconductor optical amplifiers (SOAs) are provided at one or more locations on the PIC. In one example, at least one SOA is provided in the transmitter so that the…
PHOTONIC INTEGRATED CIRCUIT INCLUDING SEMICONDUCTOR OPTICAL AMPLIFIERS
Granted: August 29, 2024
Application Number:
20240291567
Consistent with the present disclosure, a transceiver is implemented as a photonic integrated circuit (PIC) that includes a transmitter and a receiver. A laser is also provided that provides light to a splitter, which supplies a first portion of the light to the transmitter and a second power of the light to the receiver. Semiconductor optical amplifiers (SOAs) are provided at one or more locations on the PIC. In one example, at least one SOA is provided in the transmitter so that the…
PHOTONIC INTEGRATED CIRCUIT INCLUDING SEMICONDUCTOR OPTICAL AMPLIFIERS
Granted: August 29, 2024
Application Number:
20240291566
Consistent with the present disclosure, a transceiver is implemented as a photonic integrated circuit (PIC) that includes a transmitter and a receiver. A laser is also provided that provides light to a splitter, which supplies a first portion of the light to the transmitter and a second power of the light to the receiver. Semiconductor optical amplifiers (SOAs) are provided at one or more locations on the PIC. In one example, at least one SOA is provided in the transmitter so that the…
PHOTONIC INTEGRATED CIRCUIT INCLUDING SEMICONDUCTOR OPTICAL AMPLIFIERS
Granted: August 29, 2024
Application Number:
20240288749
Consistent with the present disclosure, a transceiver is implemented as a photonic integrated circuit (PIC) that includes a transmitter and a receiver. A laser is also provided that provides light to a splitter, which supplies a first portion of the light to the transmitter and a second power of the light to the receiver. Semiconductor optical amplifiers (SOAs) are provided at one or more locations on the PIC. In one example, at least one SOA is provided in the transmitter so that the…
PHOTONIC INTEGRATED CIRCUIT INCLUDING SEMICONDUCTOR OPTICAL AMPLIFIERS
Granted: August 29, 2024
Application Number:
20240288632
Consistent with the present disclosure, a transceiver is implemented as a photonic integrated circuit (PIC) that includes a transmitter and a receiver. A laser is also provided that provides light to a splitter, which supplies a first portion of the light to the transmitter and a second power of the light to the receiver. Semiconductor optical amplifiers (SOAs) are provided at one or more locations on the PIC. In one example, at least one SOA is provided in the transmitter so that the…
Subcarrier Based Data Center Network Architecture
Granted: August 22, 2024
Application Number:
20240283558
Methods, systems, and apparatus, including computer programs encoded on computer storage media, for generating, transmitting, directing, receiving, and processing optical subcarriers. In some implementations, a system includes a Tier 1 switch that supplies a plurality of data channels; a transmitter that receives the plurality of data channels, the transmitter including an optical modulator that supplies a plurality of optical subcarriers based on the plurality of data channels; an…
BALL GRID ARRAY RF PACKAGE CONFIGURATIONS
Granted: August 22, 2024
Application Number:
20240282722
Consistent with an aspect of the present disclosure, a flexible electrical interconnect connects a transmit receive optical subassembly (TROSA) with an integrated circuit package via a transmission line provided on a surface of a substrate upon which the integrated circuit is provided. Alternatively, the transmission line is embedded in the substrate. Mechanisms are provided to mechanically balance temperature induced stresses within the substrate and keep the substrate substantially…
MULTI-LENGTH LOOK-UP TABLE SPHERICAL CONSTELLATION SHAPING
Granted: January 18, 2024
Application Number:
20240022334
Consistent with the present disclosure, an encoder circuit is provided at a transmit side of an optical fiber link that maps an input sequence of bits of fixed length k to a sequence of symbols of a codeword of length n, such that the symbols of the codeword define a predetermined transmission probability distribution. In one example, each subgroup of bits of the k input bit sequence is provided to a respective look-up table, whereby the sub-group of bits constitutes an address of a…
MULTI-LENGTH LOOK-UP TABLE SPHERICAL CONSTELLATION SHAPING
Granted: January 18, 2024
Application Number:
20240022334
Consistent with the present disclosure, an encoder circuit is provided at a transmit side of an optical fiber link that maps an input sequence of bits of fixed length k to a sequence of symbols of a codeword of length n, such that the symbols of the codeword define a predetermined transmission probability distribution. In one example, each subgroup of bits of the k input bit sequence is provided to a respective look-up table, whereby the sub-group of bits constitutes an address of a…
Clock Recovery for Digital Subcarriers for Optical Networks
Granted: November 30, 2023
Application Number:
20230388041
Optical network systems and components are disclosed, including a transmitter comprising a digital signal processor that receives data; circuitry that generate a plurality of electrical signals based on the data; a plurality of filters, each of which receiving a corresponding one of the plurality of electrical signals, a plurality of roll-off factors being associated with a respective one of the plurality of filters; a plurality of DACs that receive outputs from the digital signal…
LOW PASS FILTER FOR TROSA HIGH FREQUENCY RESPONSE SUPPRESSION
Granted: September 14, 2023
Application Number:
20230291410
Consistent with the present disclosure, low pass filters are provided in the electrical paths connecting digital to analog converter (DAC) circuitry to an optical block package (also referred to as a “gold box”). The low pass filter blocks or substantially attenuates high frequency noise components present in an analog signal output from the DAC, thereby reducing errors that might otherwise be present in the transmitted data.
Clock Recovery For Subcarriers In Optical Networks
Granted: June 22, 2023
Application Number:
20230198626
Optical network systems are disclosed, including systems having transmitters with a digital signal processor comprising forward error correction circuitry that provides encoded first electrical signals based on input data; and power adjusting circuitry that receives second electrical signals indicative of the first electrical signals, the power adjusting circuitry supplying third electrical signals, wherein each of the third electrical signals is indicative of an optical power level of a…
Providing Access To Client Overhead While Transparently Transmitting The Client Signal Over Multiple Optical Subcarriers
Granted: June 22, 2023
Application Number:
20230198622
A method includes receiving client data; extracting overhead data from the client data; mapping the client data into one or more frames, where each of the one or more frames has a frame payload section and a frame overhead section, where the client data is mapped into the one or more frames; inserting the overhead data into the frame overhead section of the one or more frames; transporting the one or more frames across a network by generating a plurality of optical subcarriers carrying…
WAVEGUIDE DUAL-DEPLETION REGION (DDR) PHOTODIODES
Granted: May 11, 2023
Application Number:
20230141290
Consistent with the present disclosure, a DDR photodiode is provided on a substrate adjacent to a passive waveguide. In order to efficiently capture light output from the waveguide, the photodiode is coupled to the waveguide with a butt-joint. As a result, the photodiode and the waveguide abut one another such that the dominant mode of light propagating in the waveguide parallel to the substrate is supplied directly to a side of the absorber layer of the photodiode without, in one…
WAVEGUIDE DUAL-DEPLETION REGION (DDR) PHOTODIODES
Granted: May 11, 2023
Application Number:
20230141436
Consistent with the present disclosure, a DDR photodiode is provided on a substrate adjacent to a passive waveguide. In order to efficiently capture light output from the waveguide, the photodiode is coupled to the waveguide with a butt-joint. As a result, the photodiode and the waveguide abut one another such that the dominant mode of light propagating in the waveguide parallel to the substrate is supplied directly to a side of the absorber layer of the photodiode without, in one…
WAVEGUIDE DUAL-DEPLETION REGION (DDR) PHOTODIODES
Granted: May 11, 2023
Application Number:
20230141290
Consistent with the present disclosure, a DDR photodiode is provided on a substrate adjacent to a passive waveguide. In order to efficiently capture light output from the waveguide, the photodiode is coupled to the waveguide with a butt-joint. As a result, the photodiode and the waveguide abut one another such that the dominant mode of light propagating in the waveguide parallel to the substrate is supplied directly to a side of the absorber layer of the photodiode without, in one…
DIGITAL TONE-BASED APPARATUS AND METHOD FOR MEASURING THE FREQUENCY RESPONSE OF COHERENT OPTICAL TRANSMITTERS
Granted: May 11, 2023
Application Number:
20230146826
An optical network component, system, and method are herein described. The system and method include introducing an AM tone and data to an optical modulator generating a modulated optical signal, measuring an amplitude response of the AM tone within the modulated optical signal, calculating a frequency response based on the amplitude response, and calibrating the optical modulator with the frequency response.
WAVEGUIDE DUAL-DEPLETION REGION (DDR) PHOTODIODES
Granted: May 11, 2023
Application Number:
20230142387
Consistent with the present disclosure, a DDR photodiode is provided on a substrate adjacent to a passive waveguide. In order to efficiently capture light output from the waveguide, the photodiode is coupled to the waveguide with a butt-joint. As a result, the photodiode and the waveguide abut one another such that the dominant mode of light propagating in the waveguide parallel to the substrate is supplied directly to a side of the absorber layer of the photodiode without, in one…
WAVEGUIDE DUAL-DEPLETION REGION (DDR) PHOTODIODES
Granted: May 11, 2023
Application Number:
20230141436
Consistent with the present disclosure, a DDR photodiode is provided on a substrate adjacent to a passive waveguide. In order to efficiently capture light output from the waveguide, the photodiode is coupled to the waveguide with a butt-joint. As a result, the photodiode and the waveguide abut one another such that the dominant mode of light propagating in the waveguide parallel to the substrate is supplied directly to a side of the absorber layer of the photodiode without, in one…
