公开(公告)号：US10135221B2

公开(公告)日：2018-11-20

申请号：US15257895

申请日：2016-09-06

Applicant: Tyco Electronics Subsea Communications LLC

Inventor： Yu Sun ,  Oleg Sinkin ,  Maxim A. Bolshtyansky ,  Alexei N. Pilipetskii ,  Dmitri Foursa

IPC: H04J14/02 ,  H01S3/23 ,  H04B10/516 ,  H01S3/094 ,  H04B10/2581 ,  H04B10/297 ,  H04J14/04

Abstract: Optical amplifier assembly for spatial division multiplexing (SDM) optical communication systems. Each optical amplifier assembly includes a single pump assembly configured for causing amplification of signals traveling on separate fiber paths in different directions. Each fiber path includes a plurality of spatial dimensions. The single pump assembly includes a plurality of pump sources to provide redundancy and the optical amplifier assembly further includes splitters for splitting outputs of the pump sources to amplifiers coupled to the different spatial dimensions. Different modulation formats may be used on the different spatial dimensions with different pump power being provided to each of the modulation formats. Amplifiers with complementary outputs may be coupled to average out gain deviations.

公开(公告)号：US09929813B1

公开(公告)日：2018-03-27

申请号：US15450635

申请日：2017-03-06

Applicant: TYCO ELECTRONICS SUBSEA COMMUNICATIONS LLC

Inventor： Hussam G. Batshon ,  Maxim A. Bolshtyansky

IPC: H04B10/00 ,  H04B10/516

CPC classification number: H04B10/516 ,  H04L1/0042 ,  H04L1/0045 ,  H04L1/0058 ,  H04L1/0086 ,  H04L27/34

Abstract: A system and method involving using a nonlinear reversible code for probabilistic constellation shaping. A nonlinear reversible code encoder receives information bits and applies a nonlinear reversible code to the information bits to provide encoded bits. A mapper maps the encoded bits to successive amplitude and phase-shift keying (APSK) symbols. Each of the APSK symbols has an APSK modulation format with an associated constellation and the mapper maps each of the symbols to an associated constellation location of the constellation in response to one or more associated ones of the encoded bits.

公开(公告)号：US20180069370A1

公开(公告)日：2018-03-08

申请号：US15257895

申请日：2016-09-06

Applicant: Tyco Electronics Subsea Communications LLC

Inventor： Yu Sun ,  Oleg Sinkin ,  Maxim A. Bolshtyansky ,  Alexei N. Pilipetskii ,  Dmitri Foursa

IPC: H01S3/23 ,  H04J14/02 ,  H04B10/516 ,  H01S3/094

CPC classification number: H01S3/2316 ,  H01S3/094049 ,  H01S3/09408 ,  H04B10/2581 ,  H04B10/2972 ,  H04B10/516 ,  H04J14/02 ,  H04J14/04

Abstract: Optical amplifier assembly for spatial division multiplexing (SDM) optical communication systems. Each optical amplifier assembly includes a single pump assembly configured for causing amplification of signals traveling on separate fiber paths in different directions. Each fiber path includes a plurality of spatial dimensions. The single pump assembly includes a plurality of pump sources to provide redundancy and the optical amplifier assembly further includes splitters for splitting outputs of the pump sources to amplifiers coupled to the different spatial dimensions. Different modulation formats may be used on the different spatial dimensions with different pump power being provided to each of the modulation formats. Amplifiers with complementary outputs may be coupled to average out gain deviations.

公开(公告)号：US09900105B1

公开(公告)日：2018-02-20

申请号：US15289874

申请日：2016-10-10

Applicant: Tyco Electronics Subsea Communications LLC

Inventor： Hussam G. Batshon ,  Maxim A. Bolshtyansky

IPC: H04B10/50 ,  H04B10/516 ,  H04B10/54 ,  H04J14/02 ,  H04B10/548

CPC classification number: H04B10/5161 ,  H04B10/50 ,  H04B10/501 ,  H04B10/505 ,  H04B10/5055 ,  H04B10/516 ,  H04B10/54 ,  H04B10/541 ,  H04B10/548 ,  H04B10/556 ,  H04J14/02 ,  H04L1/0041 ,  H04L1/0058 ,  H04L1/0086 ,  H04L27/34

Abstract: A system and method involving a coded modulation scheme using an M-APSK format with a circular constellation. A maximum achievable spectral efficiency for the transmitters may be selected and a spectral efficiency step-size of the maximum achievable spectral efficiency may be specified. The spectral efficiency for any transmitter in the system may be individually selected by reducing its spectral efficiency from the maximum achievable spectral efficiencies by a selected number of steps corresponding to the step size.

公开(公告)号：US09967051B2

公开(公告)日：2018-05-08

申请号：US15291515

申请日：2016-10-12

Applicant: Tyco Electronics Subsea Communications LLC

Inventor： Sheng Zhang ,  Maxim A. Bolshtyansky ,  Dmitri Foursa

IPC: H04J14/02 ,  H04B10/80 ,  H04B10/61

CPC classification number: H04J14/0221 ,  H04B10/294 ,  H04B10/616 ,  H04B10/80

Abstract: An optical communication amplification system may include a number of amplification stages for an optical signal that includes a first optical wavelength band signal portion and a second optical wavelength band signal portion. Each amplification stage may separate the first optical wavelength band signal portion from the second optical wavelength band signal portion. The separated first optical wavelength band signal portion is amplified using one or more first optical wavelength band amplifiers and the separated second optical wavelength band signal portion are amplified using one or more second optical wavelength band amplifiers. The amplified first optical wavelength band signal portion is filtered and a reflected portion of the first optical wavelength band signal portion may be used to provide energy to the one or more second optical wavelength band amplifiers to increase the power or gain of the separated second optical wavelength band signal portion.

公开(公告)号：US20170214484A1

公开(公告)日：2017-07-27

申请号：US15291515

申请日：2016-10-12

Applicant: Tyco Electronics Subsea Communications LLC

Inventor： Sheng Zhang ,  Maxim A. Bolshtyansky ,  Dmitri Foursa

IPC: H04J14/02 ,  H04B10/61 ,  H04B10/80

CPC classification number: H04J14/0221 ,  H04B10/294 ,  H04B10/616 ,  H04B10/80

Abstract: An optical communication amplification system may include a number of amplification stages for an optical signal that includes a first optical wavelength band signal portion and a second optical wavelength band signal portion. Each amplification stage may separate the first optical wavelength band signal portion from the second optical wavelength band signal portion. The separated first optical wavelength band signal portion is amplified using one or more first optical wavelength band amplifiers and the separated second optical wavelength band signal portion are amplified using one or more second optical wavelength band amplifiers. The amplified first optical wavelength band signal portion is filtered and a reflected portion of the first optical wavelength band signal portion may be used to provide energy to the one or more second optical wavelength band amplifiers to increase the power or gain of the separated second optical wavelength band signal portion.