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Gain clamped L-band EDFA using a fiber Bragg grating in two stage configuration

✍ Scribed by S. W. Harun; N. Tamchek; H. Ahmad

Publisher: John Wiley and Sons
Year: 2003
Tongue: English
Weight: 68 KB
Volume: 37
Category: Article
ISSN: 0895-2477
DOI: 10.1002/mop.10889

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✦ Synopsis

Abstract

A gain clamping technique for the long‐wavelength‐band erbium‐doped fiber amplifier (L‐band EDFA) is presented. It uses two circulators and a fiber Bragg grating (FBG) to route a backward amplified spontaneous emission (ASE) from a second‐stage amplifier and launch it back into the first stage. The use of a broadband (BB) FBG has shown a better gain clamping effect, compared to a narrowband (NB) FBG. The amplifier gain for the BB FBG set up is clamped at 15.0 dB with a gain variation of less than 0.1 dB for an input power as high as −5 dBm. The use of a BB FBG has also flattened the gain spectrum. © 2003 Wiley Periodicals, Inc. Microwave Opt Technol Lett 37: 265–266, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10889

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