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Proceedings Paper

Simulation of crosstalk in integrated distributed feedback laser-photodiode optical transceivers
Author(s): Qingyang Xu; Xiaobin Hong; Wanguo Liang; Xun Li; Chang-Qing Xu; Wei-Ping Huang
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Paper Abstract

In this paper, modulation crosstalk from 1310nm Distributed Feedback laser (DFB) upstream signals to 1490nm downstream signals in the monolithic integrated DFB-PD (Distributed Feedback laser-Photodiode) optical transceiver structure was simulated by the time-domain traveling wave (TDTW) rate equations numerically. It was found that high differential gain coefficient at 1490nm can contribute to the modulation crosstalk at about -25 to -30 dB. It was also found that the modulation crosstalk is modulation frequency dependent which will be enhanced about 3 dB at the relaxation oscillation frequency compared with low modulation frequency. Increasing modulation extinction ratio of the 1310nm DFB section from 10 to 18 dB, the crosstalk increases 3 dB. Such a higher modulation crosstalk (larger than -30 dB) should be considered since such crosstalk will degrade strongly the sensitivity of the 1490nm photo-detector.

Paper Details

Date Published: 8 September 2006
PDF: 9 pages
Proc. SPIE 6343, Photonics North 2006, 63431D (8 September 2006); doi: 10.1117/12.707724
Show Author Affiliations
Qingyang Xu, McMaster Univ. (Canada)
Xiaobin Hong, McMaster Univ. (Canada)
Wanguo Liang, McMaster Univ. (Canada)
Xun Li, McMaster Univ. (Canada)
Chang-Qing Xu, McMaster Univ. (Canada)
Wei-Ping Huang, McMaster Univ. (Canada)

Published in SPIE Proceedings Vol. 6343:
Photonics North 2006
Pierre Mathieu, Editor(s)

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