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Optical Engineering

Suppression of phase noises with residual-spectra eliminator in circulator-free fiber-grating optical code-division multiple-access network coder/decoder
Author(s): Jen-Fa Huang; Chen Mu Tsai; Chun Ming Huang
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Paper Abstract

In this work, transmissive spectral characteristics of fiber Bragg gratings (FBGs) are applied to construct a circulator-free scheme of an optical code-division multiple-access (OCDMA) network coder/decoder (codec). The unnecessary spectra would accompany the coding chips to arrive at the photodetectors (PDs) to induce higher phase-induced intensity noise (PIIN) and multiple-access interference (MAI). A residual-spectra eliminator (RSE) between OCDMA encoder and decoder modules is employed to remove the unnecessary spectral parts of data so that the PIIN and MAI can be reduced. A simple experiment performed on the basis of transmissive spectral characteristics of FBGs together with RSE is demonstrated to verify the capability of suppressing residual-spectra noise at the PDs. Performance evaluations indicate that using RSE between network codecs can remarkably lower the PIIN effects in the receiver PDs.

Paper Details

Date Published: 1 June 2006
PDF: 8 pages
Opt. Eng. 45(6) 065006 doi: 10.1117/1.2214707
Published in: Optical Engineering Volume 45, Issue 6
Show Author Affiliations
Jen-Fa Huang, National Cheng Kung Univ. (Taiwan)
Chen Mu Tsai, National Cheng Kung Univ. (Taiwan)
Chun Ming Huang, National Cheng Kung Univ. (Taiwan)


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