Performance Comparison of Gated and Nongated All-Optical Thresholding Detection Schemes Using Mach–Zehnder Interferometers in SPECTS O-CDMA

Author

Du, Yixue ; Cao, Jing ; Yoo, S.J.B.

Author_Institution

California Univ., Davis

Volume

19

Issue

14

fYear

2007

fDate

7/15/2007 12:00:00 AM

Firstpage

1054

Lastpage

1056

Abstract

This letter discusses the all-optical thresholding functionality of a differential-mode Mach-Zehnder interferometer for optical code-division multiple-access under two different configurations and compares their performances. Simulation results indicate that the gated operation outperforms the nongated operation. The gated operation allows efficient recovery of the correctly decoded signal in the presence of an interferer at 10 Gb/s, with a required pulse energy of only 200 f J.

Keywords

Mach-Zehnder interferometers; code division multiple access; error statistics; optical fibre communication; phase coding; Mach-Zehnder interferometers; SPECTS OCDMA; all-optical thresholding detection; all-optical thresholding functionality; bit rate 10 Gbit/s; decoded signal; differential-mode interferometer; energy 200 fJ; gated operation; nongated operation; optical code-division multiple-access; spectral phase-encoded time-spreading; Arm; Decoding; Indium phosphide; Mach-Zehnder interferometers; Nonlinear optics; Optical interferometry; Optical pulse shaping; Optical receivers; Optical sensors; Ultrafast optics; Bit-error rate (BER); Mach–Zehnder interferometer (MZI); optical code-division multiple-access (O-CDMA); spectral phase-encoded time-spreading (SPECTS);

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2007.899463

Filename

4252135