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Proceedings Paper

Research on parametrical asymmetry of FBG encoder/decoder on the performance of grating-based FFH-OCDMA system
Author(s): Menghu Cao; Jinfang Zhou
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Paper Abstract

Performance of all-fiber fast frequency hop optical code division multiple access system (FFH-OCDMA) is studied in case parametrical difference exists between the fiber Bragg grating (FBG) arrays based encoder/decoder, i.e., the relevant gratings' Bragg wavelengths or relative positions are not strictly consistent. If there are such parametrical differences, some optical pulses with specific frequencies will be lost partially, or even entirely, which reduces the peak value of the self-correlation decoding output. The multi-users simulation model of FFH-OCDMA system is presented amply in the paper, which consists of these components: signal source, encoder, decoder, fiber channel, receive detector, and data analysis module. Simulation result is presented and discussed. It shows that the system performance drops down sharply with a larger wavelength inconsistency or with a larger position relative offset, especially when the number of FBG is smaller. It is also concluded that performance degradation can be alleviated by employing longer FBG array, but with the expense of higher system complexity.

Paper Details

Date Published: 8 December 2005
PDF: 8 pages
Proc. SPIE 6021, Optical Transmission, Switching, and Subsystems III, 602146 (8 December 2005); doi: 10.1117/12.636276
Show Author Affiliations
Menghu Cao, Zhejiang Univ. (China)
Jinfang Zhou, Zhejiang Univ. (China)

Published in SPIE Proceedings Vol. 6021:
Optical Transmission, Switching, and Subsystems III
Rodney S. Tucker; Dominique Chiaroni; Wanyi Gu; Ken-ichi Kitayama, Editor(s)

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