Title :
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
fDate :
7/15/2007 12:00:00 AM
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);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2007.899463
