Title

Coherent pulse detection and multi-channel coherent detection based on a single balanced homodyne receiver

Authors

Authors

W. Lee; H. Izadpanah; P. J. Delfyett; R. Menendez;S. Etemad

Comments

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Abbreviated Journal Title

Opt. Express

Keywords

SEMICONDUCTOR-LASERS; Optics

Abstract

The performance of coherent pulse detection (CPD) and multichannel coherent detection (MCCD) based on a single dual-balanced homodyne receiver was experimentally demonstrated using a grating-coupled hybridly mode-locked semiconductor laser. Compared with direct detection, a high coherent gain of over 10 dB, as well as an SNR improvement of over 5 dB, was obtained in both detection schemes. Our experimental results have confirmed that the coherent detection processes in CPD and MCCD are nearly the same based on a square-root LO power dependence. Nevertheless, the MCCD scheme has shown an advantage in a path-length error over the CPD scheme, revealing 2 similar to 3 dB improvement in sensitivities. (c) 2007 Optical Society of America.

Journal Title

Optics Express

Volume

15

Issue/Number

5

Publication Date

1-1-2007

Document Type

Article

Language

English

First Page

2098

Last Page

2105

WOS Identifier

WOS:000244682600011

ISSN

1094-4087

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