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Proceedings Paper

5Gps 2.1 km WDM free-space optical communication experiments
Author(s): Yong Ai; Qi Geng; Jinling Yang; Helin Yang; Yalin Zhou; Xingang Lu; Kun Li
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Paper Abstract

A 2.1 km terrestrial free-space optical data link operating at 5 Gbps by using WDM and 1550 nm fiber communication techniques was established. Two 2.5 Gbps pattern generators are used to directly modulate 1530 nm and 1550 nm DFB lasers respectively. The output of each modulated optical signal are combined by a CWDM, and then amplified by a 20dBm EDFA. The amplified optical signal is then applied to a specially designed transmitting telescope. The received optical signal is focused onto the core of a 62.5μm multi-mode optical fiber using coupling optics within the receive telescope. The coupled optical signal is interfaced to a de-multiplexer to separate the two individual wavelengths, where each of two outputs is then connected to a 2.5 Gbps receiver. The BER and optical stability measurements are presented to quantify and demonstrate link quality for a 2.1 km span. BER and received optical coupled power data is presented to illustrate atmospheric effects associated with typical link performance.

Paper Details

Date Published: 28 January 2006
PDF: 6 pages
Proc. SPIE 6025, ICO20: Optical Communication, 602513 (28 January 2006); doi: 10.1117/12.667048
Show Author Affiliations
Yong Ai, Wuhan Univ. (China)
Qi Geng, Wuhan Univ. (China)
Jinling Yang, Wuhan Univ. (China)
Helin Yang, Central China Normal Univ. (China)
Yalin Zhou, Wuhan Univ. (China)
Xingang Lu, Wuhan Univ. (China)
Kun Li, Wuhan Univ. (China)


Published in SPIE Proceedings Vol. 6025:
ICO20: Optical Communication
Yun-Chur Chung; Shizhong Xie, Editor(s)

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