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Proceedings Paper

Advanced unrepeatered systems using novel Raman amplification schemes
Author(s): Do-il Chang; Wayne Pelouch; Sergey Burtsev; Philippe Perrier; Herve Fevrier
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Paper Abstract

Unrepeatered transmission systems provide a cost-effective solution to transmit high capacity channels in submarine networks to communicate between coastal population centers or in terrestrial networks to connect remote areas where service access is difficult. The main goal of unrepeatered systems has traditionally been to achieve the longest reach, however, increasing traffic demands now require unrepeatered systems to support both longer reach and higher transport capacity. As a result, transmission rate of unrepeatered systems has quickly moved from 10 Gb/s to 40 Gb/s or 100 Gb/s. This paper reviews the key basic technologies, with a specific focus on Raman amplification, required for long-reach, high-capacity unrepeatered optical transmission systems. We will discuss novel Raman amplification schemes, enhanced remote optically pumped amplifiers (ROPA), ultra-low loss / large effective area fibers, and coherent transmission with advanced modulation format and high FEC coding gain. We will also report recent experimental demonstrations that show how these technologies have been combined to achieve industry’s leading capacity and reach transmission.

Paper Details

Date Published: 7 February 2015
PDF: 8 pages
Proc. SPIE 9389, Next-Generation Optical Communication: Components, Sub-Systems, and Systems IV, 93890G (7 February 2015); doi: 10.1117/12.2078283
Show Author Affiliations
Do-il Chang, Xtera Communications, Inc. (United States)
Wayne Pelouch, Xtera Communications, Inc. (United States)
Sergey Burtsev, Xtera Communications, Inc. (United States)
Philippe Perrier, Xtera Communications, Inc. (United States)
Herve Fevrier, Xtera Communications, Inc. (United States)


Published in SPIE Proceedings Vol. 9389:
Next-Generation Optical Communication: Components, Sub-Systems, and Systems IV
Guifang Li; Xiang Zhou, Editor(s)

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