skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Dispersion Compensation Requirements for Optical CDMA Using WDM Lasers

Abstract

Optical code division multiple access (O-CDMA) uses very narrow transmission pulses and is thus susceptible to fiber optic link impairments. When the O-CDMA is implemented as wavelength/time (W/T) matrices which use wavelength division multiplexing (WDM) sources such as multi-frequency laser transmitters, the susceptibility may be higher due to: (a) the large bandwidth utilized and (b) the requirement that the various wavelength components of the codes be synchronized at the point of modulation and encoding as well as after (optical) correlation. A computer simulation based on the nonlinear Schroedinger equation, developed to study optical networking on the National Transparent Optical Network (NTON), was modified to characterize the impairments on the propagation and decoding of W/T matrix codes over a link of the NTON. Three critical link impairments were identified by the simulation: group velocity dispersion (GVD); the flatness of the optical amplifier gain; and the slope of the GVD. Subsequently, experiments were carried out on the NTON link to verify and refine the simulations as well as to suggest improvements in the W/T matrix signal processing design. The NTON link measurements quantified the O-CDMA dispersion compensation requirements. Dispersion compensation management is essential to assure the performance of W/T matrix codes.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab., CA (US)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
15005687
Report Number(s):
UCRL-JC-146464
Journal ID: ISSN 0277-786X; TRN: US0305602
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Journal Volume: 4653; Conference: Photonics West, San Jose, CA (US), 01/19/2002--01/25/2002; Other Information: PBD: 10 Dec 2001
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; AMPLIFIERS; COMPUTERIZED SIMULATION; DESIGN; FIBER OPTICS; LASERS; MANAGEMENT; MATRICES; MODULATION; PERFORMANCE; PROCESSING; SCHROEDINGER EQUATION; SIMULATION; VELOCITY; WAVELENGTHS

Citation Formats

Mendez, A J, Hendandez, V J, Feng, H X C, Heritage, J P, and Lennon, W J. Dispersion Compensation Requirements for Optical CDMA Using WDM Lasers. United States: N. p., 2001. Web. doi:10.1117/12.469636.
Mendez, A J, Hendandez, V J, Feng, H X C, Heritage, J P, & Lennon, W J. Dispersion Compensation Requirements for Optical CDMA Using WDM Lasers. United States. doi:10.1117/12.469636.
Mendez, A J, Hendandez, V J, Feng, H X C, Heritage, J P, and Lennon, W J. Mon . "Dispersion Compensation Requirements for Optical CDMA Using WDM Lasers". United States. doi:10.1117/12.469636. https://www.osti.gov/servlets/purl/15005687.
@article{osti_15005687,
title = {Dispersion Compensation Requirements for Optical CDMA Using WDM Lasers},
author = {Mendez, A J and Hendandez, V J and Feng, H X C and Heritage, J P and Lennon, W J},
abstractNote = {Optical code division multiple access (O-CDMA) uses very narrow transmission pulses and is thus susceptible to fiber optic link impairments. When the O-CDMA is implemented as wavelength/time (W/T) matrices which use wavelength division multiplexing (WDM) sources such as multi-frequency laser transmitters, the susceptibility may be higher due to: (a) the large bandwidth utilized and (b) the requirement that the various wavelength components of the codes be synchronized at the point of modulation and encoding as well as after (optical) correlation. A computer simulation based on the nonlinear Schroedinger equation, developed to study optical networking on the National Transparent Optical Network (NTON), was modified to characterize the impairments on the propagation and decoding of W/T matrix codes over a link of the NTON. Three critical link impairments were identified by the simulation: group velocity dispersion (GVD); the flatness of the optical amplifier gain; and the slope of the GVD. Subsequently, experiments were carried out on the NTON link to verify and refine the simulations as well as to suggest improvements in the W/T matrix signal processing design. The NTON link measurements quantified the O-CDMA dispersion compensation requirements. Dispersion compensation management is essential to assure the performance of W/T matrix codes.},
doi = {10.1117/12.469636},
journal = {},
number = ,
volume = 4653,
place = {United States},
year = {Mon Dec 10 00:00:00 EST 2001},
month = {Mon Dec 10 00:00:00 EST 2001}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share: