公开(公告)号：US12088344B1

公开(公告)日：2024-09-10

申请号：US17714139

申请日：2022-04-05

Applicant: CABLE TELEVISION LABORATORIES, INC.

Inventor： Mu Xu ,  Luis Alberto Campos ,  Curtis Dean Knittle ,  Haipeng Zhang ,  Zhensheng Jia

IPC: H04B10/40 ,  H04J14/02

CPC classification number: H04B10/40 ,  H04J14/0238

Abstract: An integrated transceiver is provided for a coherent optical communication network. The integrated transceiver includes a first optical transceiver portion configured to receive and transmit coherent optical signals from and to the coherent optical communication network, respectively. The integrated transceiver further includes a second optical transceiver portion configured to receive and transmit non-coherent optical signals respectively from and to a non-coherent optical communication network. The integrated transceiver further includes an integrated media access control (MAC) processor disposed between the first and second optical transceiver portions. The integrated MAC processor is configured to (i) exchange cooperative scheduling information from the first optical transceiver portion to the second optical transceiver portion, and (ii) enable the first optical transceiver portion to schedule data traffic between the coherent and non-coherent optical communication networks using scheduling information obtained from a control plane of the second optical transceiver portion.

公开(公告)号：US12074691B1

公开(公告)日：2024-08-27

申请号：US18100253

申请日：2023-01-23

Applicant: CABLE TELEVISION LABORATORIES, INC.

Inventor： Mu Xu ,  Ruoyu Sun ,  Balkan Kecicioglu ,  Junwen Zhang ,  Haipeng Zhang ,  Zhensheng Jia ,  Luis Alberto Campos

IPC: H04J14/02 ,  H04B10/11 ,  H04B10/2575 ,  H04Q11/00

CPC classification number: H04J14/023 ,  H04B10/11 ,  H04B10/2575 ,  H04J14/0212 ,  H04Q11/0005 ,  H04Q2011/0015 ,  H04Q2011/0016 ,  H04Q2011/0039

Abstract: A communications network includes a central communication unit, an optical transport medium, and a plurality of remote radio base stations. The central communication unit generates, within a selected millimeter-wave frequency band, a plurality of adjacent two-tone optical frequency conjugate pairs. Each conjugate pair includes a first optical tone carrying a modulated data signal, and a second optical tone carrying a reference local oscillator signal. The optical transport medium transports the plurality of two-tone conjugate pairs to the plurality of radio base stations, and each base station receives at least one conjugate pair at an optical front end thereof. The optical front end separates the first optical tone from the second optical tone, and converts the first optical tone into a millimeter-wave radio frequency electrical signal. The base station further includes a radio antenna system for wirelessly transmitting the millimeter-wave radio frequency electrical signal to at least one wireless receiving device.

公开(公告)号：US12074411B1

公开(公告)日：2024-08-27

申请号：US18222962

申请日：2023-07-17

Applicant: CABLE TELEVISION LABORATORIES, INC.

Inventor： Haipeng Zhang ,  Zhensheng Jia ,  Luis Alberto Campos ,  Mu Xu ,  Junwen Zhang

IPC: H01S3/16 ,  H01S5/00 ,  H01S5/028 ,  H01S5/065 ,  H01S5/14 ,  H01S5/40 ,  H04B10/50

CPC classification number: H01S5/4006 ,  H01S5/005 ,  H01S5/0288 ,  H01S5/0656 ,  H01S5/14 ,  H01S5/141 ,  H04B10/503

Abstract: An injection locking laser source is provided for an optical communications system. The injection locking laser source includes a laser cavity configured to receive an externally injected low linewidth primary light source. The laser cavity includes a cavity length, a cavity facet reflectivity, and a cavity quality factor. The injection locking laser source further includes an emitting region configured to output a secondary light source injection locked to the externally injected low linewidth primary light source at a stable detuning frequency based on a photon number, a steady-state phase, and a carrier number of the primary light source injected into the cavity.

公开(公告)号：US11949497B2

公开(公告)日：2024-04-02

申请号：US17838853

申请日：2022-06-13

Applicant: CABLE TELEVISION LABORATORIES, INC.

Inventor： Zhensheng Jia ,  Luis Alberto Campos ,  Curtis Dean Knittle

IPC: H04B10/00 ,  H04J14/02 ,  H04J14/08

CPC classification number: H04J14/023 ,  H04J14/0204 ,  H04J14/0282 ,  H04J14/08

Abstract: An optical network communication system utilizes a passive optical network including an optical hub having an optical line terminal, downstream transmitter, an upstream receiver, a processor, and a multiplexer. The upstream receiver includes a plurality of TWDMA upstream subreceivers. The system includes a power splitter for dividing a coherent optical signal from the optical hub into a plurality of downstream wavelength signals, a long fiber to carry the coherent optical signal between the optical hub and the power splitter, and a plurality of serving groups. Each serving group includes a plurality of optical network units configured to (i) receive at least one downstream wavelength signal, and (ii) transmit at least one upstream wavelength signal. The system includes a plurality of short fibers to carry the downstream and upstream wavelength signals between the power splitter and the optical network units, respectively. Each upstream subreceiver receives a respective upstream wavelength signal.

公开(公告)号：US11757556B1

公开(公告)日：2023-09-12

申请号：US17825023

申请日：2022-05-26

Applicant: CABLE TELEVISION LABORATORIES, INC.

Inventor： Mu Xu ,  Zhensheng Jia ,  Haipeng Zhang ,  Luis Alberto Campos

IPC: H04J14/00 ,  H04J14/02 ,  H04B10/2519 ,  H04B10/532 ,  H04B10/516 ,  H04B10/27

CPC classification number: H04J14/0239 ,  H04B10/2519 ,  H04B10/27 ,  H04B10/5161 ,  H04B10/532 ,  H04J14/002

Abstract: An optical communication network includes a downstream optical transceiver. The downstream optical transceiver includes at least one coherent optical transmitter configured to transmit a downstream coherent dual-band optical signal having a left-side band portion, a right-side band portion, and a central optical carrier disposed within a guard band between the left-side band portion and the right-side band portion. The network further includes an optical transport medium configured to carry the downstream coherent dual-band optical signal from the downstream optical transceiver. The network further includes at least one modem device operably coupled to the optical transport medium and configured to receive the downstream coherent dual-band optical signal from the optical transport medium. The at least one modem device includes a downstream coherent optical receiver, and a first slave laser injection locked to a frequency of the central optical carrier.

公开(公告)号：US11750356B2

公开(公告)日：2023-09-05

申请号：US17838659

申请日：2022-06-13

Applicant: CABLE TELEVISION LABORATORIES, INC.

Inventor： Zhensheng Jia ,  Luis Alberto Campos ,  Curtis Dean Knittle ,  Jing Wang

IPC: H04L5/02 ,  H04H20/69 ,  H04L12/28 ,  H04H20/78 ,  H04N21/61

CPC classification number: H04L5/026 ,  H04H20/69 ,  H04H20/78 ,  H04L12/2801 ,  H04L12/2885 ,  H04N21/6118 ,  H04N21/6168

Abstract: An optical network includes a transmitter portion configured to transmit a digitized stream of symbols over a digital optical link, a mapping unit disposed within the transmitter portion and configured to code the transmitted digitized stream of symbols with a mapping code prior to transmission over the digital optical link, a receiver portion configured to recover the coded stream of symbols from the digital optical link, and a demapping unit disposed within the receiver portion and configured to map the recovered coded stream of symbols into an uncoded digitized signal corresponding to the digitized stream of symbols at the transmitter portion prior to coding by the mapping unit.

公开(公告)号：US11716164B1

公开(公告)日：2023-08-01

申请号：US17370592

申请日：2021-07-08

Applicant: CABLE TELEVISION LABORATORIES, INC.

Inventor： Zhensheng Jia ,  Luis Alberto Campos ,  Jing Wang ,  Mu Xu ,  Haipeng Zhang ,  Curtis Dean Knittle

IPC: H04J14/00 ,  H04B10/43 ,  H04J14/02 ,  H04L5/14 ,  H04B10/25

CPC classification number: H04J14/002 ,  H04B10/2589 ,  H04B10/43 ,  H04J14/0234 ,  H04J14/0236 ,  H04L5/14

Abstract: A full duplex communication network includes an optical transmitter end having a first coherent optics transceiver, an optical receiver end having a second coherent optics transceiver, and an optical transport medium operably coupling the first coherent optics transceiver to the second coherent optics transceiver. The first coherent optics transceiver is configured to simultaneously transmit a downstream optical signal and receive an upstream optical signal. The second coherent optics transceiver is configured to simultaneously receive the downstream optical signal from the first coherent optics transceiver and transmit the upstream optical signal first coherent optics transceiver. At least one of the downstream optical signal and the upstream optical signal includes at least one coherent optical carrier and at least one non-coherent optical carrier.

公开(公告)号：US11700065B1

公开(公告)日：2023-07-11

申请号：US17937677

申请日：2022-10-03

Applicant: Cable Television Laboratories, Inc.

Inventor： Mu Xu ,  Zhensheng Jia ,  Luis Alberto Campos ,  Chris Stengrim

IPC: H04B10/564 ,  H04B10/54 ,  H04B10/50

CPC classification number: H04B10/541 ,  H04B10/504 ,  H04B10/564

Abstract: A method for automatic power and modulation management in a communication network includes (a) generating a discontinuous management function that is a weighted function of at least spectral efficiency and power consumption of the communication network, (b) determining, from the discontinuous management function, an optimal modulation format, an optimal forward error correction (FEC) rate, and an optimal output power of a transmitter of the communication network, which collectively achieve a maximum value of the management function, and (c) causing the transmitter to operate according to the optimal modulation format, the optimal FEC rate, and the optimal output power.

公开(公告)号：US11689290B2

公开(公告)日：2023-06-27

申请号：US17723025

申请日：2022-04-18

Applicant: CABLE TELEVISION LABORATORIES, INC.

Inventor： Zhensheng Jia ,  Luis Alberto Campos ,  Curtis Dean Knittle

IPC: H04J14/00 ,  H04B10/50 ,  H04B10/64 ,  H04B10/532 ,  H04B10/63 ,  H04J14/04 ,  H04J14/06

CPC classification number: H04B10/504 ,  H04B10/502 ,  H04B10/505 ,  H04B10/506 ,  H04B10/532 ,  H04B10/63 ,  H04B10/64 ,  H04J14/04 ,  H04J14/06

Abstract: An injection locked transmitter for an optical communication network includes a primary seed laser source input substantially confined to a single longitudinal mode, an input data stream, and a laser injected modulator including at least one secondary laser having a resonator frequency that is injection locked to a frequency of the single longitudinal mode of the primary seed laser source. The laser injected modulator is configured to receive the primary seed laser source input and the input data stream, and output a laser modulated data stream.

公开(公告)号：US11575448B1

公开(公告)日：2023-02-07

申请号：US17401473

申请日：2021-08-13

Applicant: CABLE TELEVISION LABORATORIES, INC.

Inventor： Junwen Zhang ,  Luis Alberto Campos ,  Zhensheng Jia

IPC: H04B10/61

Abstract: An optical network communication system utilizes a coherent passive optical network (PON). The system includes an optical line terminal (OLT) having a downstream transmitter and an upstream receiver system configured for time-wavelength division coherent detection. The system further includes a splitter in operable communication with the OLT, and a plurality of optical network units (ONUs) in operable communication with the splitter. Each of the plurality of ONUs is configured to (i) receive downstream coherent burst signals from the OLT, and (ii) transmit at least one upstream burst signal to the OLT. The upstream receiver system further includes a power control module and a local oscillator (LO) configured to generate an optical LO signal The power control module is configured to adaptively control, in real-time, a power level of the optical LO signal.