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Optical Engineering

Investigation of a method to use a single shared delayed interferometer for receiving optical differential phase shift keying wavelength-division multiplexing signals
Author(s): Bo-Hun Choi; Dong-Soo Lee; Chang-Bong Kim; JeSoo Ko
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Paper Abstract

A receiver configuration using a single shared delay interferometer (DI) for optical differential phase-shift keying (DPSK) wavelength-division multiplexing (WDM) signals is demonstrated and investigated in 40-Gbit/s signal transmission. Experiment comparison between the proposed and conventional configurations is performed for signal performance and a 3-dB bandwidth of the receiver sensitivity penalty. The wavelength mismatch of optical components used and the effects are measured to investigate the wavelength dependency of the proposed configuration. This demonstrates that there is no difference in performance between the two configurations and between WDM channels in the proposed configuration. Thus, it is suggested that the proposed configuration using a single DI can be applied for 20 WDM channels between 1531.116 and 1561.419 nm, with 200-GHz channel spacing in a bandwidth of >30 nm, for receiving DPSK signals.

Paper Details

Date Published: 1 October 2009
PDF: 5 pages
Opt. Eng. 48(10) 105001 doi: 10.1117/1.3242742
Published in: Optical Engineering Volume 48, Issue 10
Show Author Affiliations
Bo-Hun Choi, Dong-A Univ. (Korea, Republic of)
Dong-Soo Lee, Electronics and Telecommunications Research Institute (Korea, Republic of)
Chang-Bong Kim, Kongju National Univ. (Korea, Republic of)
JeSoo Ko, Electronics and Telecommunications Research Institute (Korea, Republic of)

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