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Bidirectional Single-Fiber Multiwavelength Ring Networks
Keang-Po HO Shien-Kuei LIAW Frank F.-K. TONG
IEICE TRANSACTIONS on Communications
Publication Date: 2000/10/25
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Advanced Internetworking based on Photonic Network Technologies)
wavelength-division-multiplexing, bidirectional ring, optical communications,
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High-capacity multiwavelength ring networks with bidirectional WDM add/drop multiplexer (WADM) having built-in EDFAs is analyzed and demonstrated. All WDM channels can be added/dropped independently in each direction. The capacity of a bidirectional ring is found to be approximately twice that of an unidirectional ring. An eight-wavelength WADM is demonstrated for a data rate of 10 Gb/s per channel, providing an overall capacity of 80 Gb/s. The performance of the add/drop multiplexer is not degraded by backward backscattering light. The same WADM is also demonstrated to be able to serve as a bidirectional in-line optical amplifier.