Digital Coherent Transmission for Next- Generation Cable Operators’ Optical Access Networks A Technical Paper prepared for SCTE/ISBE by Zhensheng (Steve) Jia, Ph.D. Principal Architect CableLabs 858 Coal Creek Circle Louisville, Colorado 80027 303-661-3364
[email protected] L. Alberto Campos, Ph.D. Distinguished Technologist CableLabs 858 Coal Creek Circle Louisville, Colorado 80027 303-661-3377
[email protected] Chris Stengrim, CableLabs Jing Wang, Ph.D., CableLabs Curtis Knittle, Ph.D., CableLabs © 2017 SCTE-ISBE and NCTA. All rights reserved. Table of Contents Title Page Number Introduction ________________________________________________________________________ 5 Content ___________________________________________________________________________ 6 1. Increasing Demand for Higher Bandwidth ____________________________________________ 6 2. Fiber Shortage Challenge in Cable HFC Network ______________________________________ 7 3. Coherent Optics Use Cases in Cable ______________________________________________ 11 3.1. Aggregation Use Case Scenarios ___________________________________________ 11 3.2. Direct Edge-to-Edge Connectivity Use Case Scenarios __________________________ 13 3.3. Economics of Coherent Optics in the Aggregation Use Case Scenario ______________ 13 4. Digital Coherent Optical Transmission Technology ____________________________________ 16 4.1. Optical Transmission Technology Evolution ___________________________________ 16 4.2. Rebirth of Coherent Optics ________________________________________________ 17 4.3.