Invention Grant
- Patent Title: Methods and apparatus for optical communications via pulse amplitude modulation (PAM) in dense wavelength-division multiplexing (DWDM) systems
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Application No.: US17525489Application Date: 2021-11-12
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Publication No.: US11522616B2Publication Date: 2022-12-06
- Inventor: Yang Yue , Qiang Wang , Zhen Qu , Xiao Han
- Applicant: Juniper Networks, Inc.
- Applicant Address: US CA Sunnyvale
- Assignee: Juniper Networks, Inc.
- Current Assignee: Juniper Networks, Inc.
- Current Assignee Address: US CA Sunnyvale
- Agency: Cooley LLP
- Main IPC: H04B10/00
- IPC: H04B10/00 ; H04B10/54 ; H04B10/079 ; H04J14/02 ; H04L1/00 ; H04J14/00
Abstract:
A method includes applying, to a modulated digital signal, a forward error correction (FEC) including a low-density parity-check (LDPC) to produce a coded digital signal. Nyquist shaping is applied to the coded digital signal to generate a filtered digital signal. A representation of the filtered digital signal is transmitted in an optical communication channel via a dense wavelength division multiplexing (DWDM) scheme.
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