Asynchronous detection of optical code division multiple access signals using a bandwidth-efficient and wavelength-aware receiver
Optics Letters, Vol. 35, Issue 7, pp. 1097-1099 (2010)
http://dx.doi.org/10.1364/OL.35.001097
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Abstract
We experimentally demonstrate what we believe to be a novel detection scheme for interfacing asynchronous optical code division multiple access (CDMA) signals with an electronic clock and data recovery system that operates only at the baseband bandwidth. This allows using a large optical bandwidth expansion factor in which the optical chip rate is much larger than the bandwidth of the optoelectronic receiver. The received optical CDMA signal is launched into a four-wave-mixing-based wavelength-aware all-optical front end that rejects multiaccess interference, followed by an amplitude-noise suppression stage comprised of a semiconductor optical amplifier. The clean signal is then converted into a non-return-to-zero-like signal by a baseband receiver. Using the proposed detection scheme, asynchronous transmission and detection of optical CDMA signals is implemented. With the novel detection scheme, the classic CDMA near–far problem is mitigated, and error-free detection is easily obtained.
© 2010 Optical Society of America
OCIS Codes
(060.2330) Fiber optics and optical communications : Fiber optics communications
(190.4370) Nonlinear optics : Nonlinear optics, fibers
(190.4380) Nonlinear optics : Nonlinear optics, four-wave mixing
(060.1155) Fiber optics and optical communications : All-optical networks
ToC Category:
Fiber Optics and Optical Communications
History
Original Manuscript: December 7, 2009
Revised Manuscript: February 7, 2010
Manuscript Accepted: February 8, 2010
Published: March 31, 2010
Citation
Mable P. Fok, Yanhua Deng, and Paul R. Prucnal, "Asynchronous detection of optical code division multiple access signals using a bandwidth-efficient and wavelength-aware receiver," Opt. Lett. 35, 1097-1099 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-7-1097
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