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Long-wavelength EDFA gain enhancement through 1550-nm-band lasing

✍ Scribed by Junqiang Sun

Publisher: John Wiley and Sons
Year: 2002
Tongue: English
Weight: 95 KB
Volume: 33
Category: Article
ISSN: 0895-2477
DOI: 10.1002/mop.10286

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✦ Synopsis

Abstract

Gain enhancement and bandwidth broadening in a long‐wavelength band (L band) EDFA are demonstrated by incorporating an erbium‐doped fiber laser. Utilizing the strong 1550 nm lasing signal used as a secondary pump source, considerable improvements in gain and its bandwidth are achieved. The enhancement of the L‐band gain characteristics is strongly influenced by a secondary pump signal wavelength and its optical power. © 2002 Wiley Periodicals, Inc. Microwave Opt Technol Lett 33: 240–242, 2002; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10286

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## Abstract A unique method of upgrading a __C__‐band EDFA into a highly efficient __L__‐band EDFA is presented, incorporating a gain‐clamped amplifier (ring laser) that acts as a gain‐improving element in an unpumped erbium‐doped fiber. A gain improvement of 17.8 dB and noise figures <4.0 dB are m