公开(公告)号：US10797796B2

公开(公告)日：2020-10-06

申请号：US16413506

申请日：2019-05-15

Applicant: CABLE TELEVISION LABORATORIES, INC

Inventor： Luis Alberto Campos ,  Zhensheng Jia

IPC: H04B10/2507 ,  H04J14/06

Abstract: A full duplex communication network includes a first coherent optics transceiver having (i) a first receiver, and (ii) a first transmitter configured to transmit a first dual polarized signal. The network further includes a second coherent optics transceiver having (i) a second receiver configured to receive the first dual polarized signal, and (ii) a second transmitter configured to transmit a second dual polarized signal. The network further includes an optical transport medium operably coupling the first coherent optics transceiver to the second coherent optics transceiver, and a first compensation module configured to filter (i) crosstalk between orthogonal components of the first dual polarized signal, and (ii) reflections between the first dual polarized signal and the second dual polarized signal.

公开(公告)号：US20200244367A1

公开(公告)日：2020-07-30

申请号：US16847463

申请日：2020-04-13

Applicant: CABLE TELEVISION LABORATORIES, INC

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

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

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

公开(公告)号：US20200228206A1

公开(公告)日：2020-07-16

申请号：US16828371

申请日：2020-03-24

Applicant: CABLE TELEVISION LABORATORIES, INC

Inventor： Jing Wang ,  Luis Alberto Campos ,  Zhensheng Jia

IPC: H04B10/2575 ,  H04B1/00 ,  H03M3/00

Abstract: A baseband processing unit includes a baseband processor configured to receive a plurality of component carriers of a radio access technology wireless service, and a delta-sigma digitization interface configured to digitize at least one carrier signal of the plurality of component carriers into a digitized bit stream, for transport over a transport medium, by (i) oversampling the at least one carrier signal, (ii) quantizing the oversampled carrier signal into the digitized bit stream using two or fewer quantization bits.

公开(公告)号：US10686466B2

公开(公告)日：2020-06-16

申请号：US16503316

申请日：2019-07-03

Applicant: CABLE TELEVISION LABORATORIES, INC.

Inventor： Mu Xu ,  Zhensheng Jia ,  Jing Wang ,  Luis Alberto Campos

IPC: H03M3/00 ,  H03M7/36 ,  H03M1/12 ,  G06F17/16 ,  H03M13/00 ,  G06F17/17 ,  H03M1/06

Abstract: A method for differentiator-based compression of digital data includes (a) using a subtraction module, subtracting a predicted signal from a sample of an original signal to obtain an error signal, (b) using a quantization module, quantizing the error signal to obtain a quantized error signal, and (c) generating the predicted signal using a least means square (LMS)-based filtering method.

公开(公告)号：US10601510B2

公开(公告)日：2020-03-24

申请号：US16283520

申请日：2019-02-22

Applicant: CABLE TELEVISION LABORATORIES, INC

Inventor： Jing Wang ,  Luis Alberto Campos ,  Zhensheng Jia

IPC: H04B10/2575 ,  H04B1/00 ,  H03M3/00

Abstract: A baseband processing unit includes a baseband processor configured to receive a plurality of component carriers of a radio access technology wireless service, and a delta-sigma digitization interface configured to digitize at least one carrier signal of the plurality of component carriers into a digitized bit stream, for transport over a transport medium, by (i) oversampling the at least one carrier signal, (ii) quantizing the oversampled carrier signal into the digitized bit stream using two or fewer quantization bits.

公开(公告)号：US20200076508A1

公开(公告)日：2020-03-05

申请号：US16676295

申请日：2019-11-06

Applicant: CABLE TELEVISION LABORATORIES, INC

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

IPC: H04B10/40 ,  H04B10/25 ,  H04L5/14 ,  H04B10/50 ,  H04B10/61

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：US20200052808A1

公开(公告)日：2020-02-13

申请号：US16657781

申请日：2019-10-18

Applicant: CABLE TELEVISION LABORATORIES, INC

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

IPC: H04J14/02 ,  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：US20200044747A1

公开(公告)日：2020-02-06

申请号：US16530838

申请日：2019-08-02

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.

公开(公告)号：US10523322B2

公开(公告)日：2019-12-31

申请号：US16040870

申请日：2018-07-20

Applicant: CABLE TELEVISION LABORATORIES, INC

Inventor： Thomas H. Williams ,  Luis Alberto Campos ,  Zhensheng Jia

IPC: H04B10/2513 ,  H04B10/69 ,  H04B10/40 ,  H04B10/60 ,  H04B10/50

Abstract: An optical signal receiver includes a processor, a memory, an input, an output, and a sampling unit in operable communication with the processor and the memory. The sampling unit includes a shift register and a clock, and is configured to receive a laser signal at the input, collect a first sample of the received input laser signal at a first time interval, determine an amplitude of the first sample, assign a first symbol of a plurality of symbols to the determined amplitude, insert the first symbol at a first insertion point within the shift register, and generate a delay value at the output based on a position of the first insertion point with respect to the output.

公开(公告)号：US20190305854A1

公开(公告)日：2019-10-03

申请号：US16370873

申请日：2019-03-29

Applicant: CABLE TELEVISION LABORATORIES, INC

Inventor： Luis Alberto Campos ,  Zhensheng Jia ,  Matthew D. Schmitt

IPC: H04B10/63 ,  H04B10/61

Abstract: A communication network includes a coherent optics transmitter, a coherent optics receiver, an optical transport medium operably coupling the coherent optics transmitter to the coherent optics receiver, and a coherent optics interface. The coherent optics interface includes a lineside interface portion, a clientside interface portion, and a control interface portion.