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Journal Article
A Variable-Gain Optical Amplifier for Metro WDM Networks With Mixed Span Losses: A Gain-Clamped Semiconductor Optical Amplifier Combined With a Raman Fiber Amplifier
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- Authors
- H. H. Lee, J. M. Oh, D. Lee, J. Han, H. S. Chung, K. Kim
- Issue Date
- 2005-06
- Citation
- IEEE Photonics Technology Letters, v.17, no.6, pp.1301-1303
- ISSN
- 1041-1135
- Publisher
- IEEE
- Language
- English
- Type
- Journal Article
- Abstract
- We propose a variable-gain optical amplifier that exhibits excellent performance in metro wavelength-division-multiplexing networks containing mixed span losses. The amplifier consists of a variable-gain Raman fiber amplifier and a gain-clamped semiconductor optical amplifier. Each span of different loss is exactly compensated by adjusting the pump power of a Raman laser diode to have the maximum optical signal-to-noise ratio. Sixteen channels of 10-Gb/s signals were successfully transmitted over 170 km of mixed span losses (total, 87 dB) under dynamic additions/removals situations. © 2005 IEEE.
- KSP Keywords
- Gain-clamped semiconductor optical amplifier(GC-SOA), Laser diode(LD), Optical Signal-To-Noise Ratio(OSNR), Pump power, Raman fiber amplifier, Raman laser, Semiconductor optical amplifiers(SOAs), Signal noise ratio(SNR), WDM networks, Wavelength Division Multiplexing(WDM), excellent performance