Interference pattern analysis of optical CDMA system using the SCAE and SCAD

Tae-Gu Kang; Jae-Kyong Choi; Chan Young Park; Young-Wan Choi; YoungChan Kim

doi:10.1117/12.384404

27 April 2000 Interference pattern analysis of optical CDMA system using the SCAE and SCAD

Tae-Gu Kang, Jae-Kyong Choi, Chan Young Park, Young-Wan Choi, YoungChan Kim

Proceedings Volume 3952, Optoelectronic Interconnects VII; Photonics Packaging and Integration II; (2000) https://doi.org/10.1117/12.384404
Event: Symposium on Integrated Optoelectronics, 2000, San Jose, CA, United States

Abstract

The series coupler access encoder (SCAE) applied to optical code division multiple access (CDMA) system generates the optical signals that cross-correlation of each user can be minimized according to the increase of the length of optical delay line connected among N couplers. A SCAE can act as either an encoding or a decoding structure depending on which terminals are used for the input/output of the data. This concept had already been published. However, in previous studies, the system performance was analyzed only considering the first order signals. The SCAE and SCAD have the high order signals of various patterns as the number of coupler increases, resulting in the change of auto- and cross-correlation intensities. Also, the number of users connected in an optical CDMA network could be limited since the side-lobe peaks are increased by the third order signals. In this paper, we analyzed the properties of optical matched filter considering the third order signals in optical CDMA network using SCAE and SCAD. We also estimate the variance of peak to side-lobe ratio in accordance with the increase of the number of couplers.

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Tae-Gu Kang, Jae-Kyong Choi, Chan Young Park, Young-Wan Choi, and YoungChan Kim "Interference pattern analysis of optical CDMA system using the SCAE and SCAD", Proc. SPIE 3952, Optoelectronic Interconnects VII; Photonics Packaging and Integration II, (27 April 2000); https://doi.org/10.1117/12.384404

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KEYWORDS

Signal detection

Channel projecting optics

Computer programming

Electronic filtering

Optical networks

Optical filters

Code division multiplexing

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