Transmission edge filters for power equalization of EDFA's

We propose and demonstrate the use of transmission edge filters based on apodized linearly chirped fiber Bragg gratings for providing power equalization among different wavelength channels in an erbium-doped fiber amplifier module. The filters we fabricated provide a dynamic range of /spl ap/13 dB,...

Full description

Saved in:
Bibliographic Details
Published inIEEE photonics technology letters Vol. 12; no. 7; pp. 822 - 824
Main Authors Chen, L.R., Cooper, D.J.F., Smith, P.W.E.
Format Journal Article
LanguageEnglish
Published New York IEEE 01.07.2000
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Active filters
Bragg gratings
Channels
Dynamic range
Equalization
Erbium-doped fiber amplifier
Feedback loop
Feedback loops
Fiber gratings
Fibers
Group delay
Noise levels
Nonlinear filters
Photonics
Power filters
Wavelength division multiplexing
Wavelengths
Online AccessGet full text

Cover

More Information
Summary:We propose and demonstrate the use of transmission edge filters based on apodized linearly chirped fiber Bragg gratings for providing power equalization among different wavelength channels in an erbium-doped fiber amplifier module. The filters we fabricated provide a dynamic range of /spl ap/13 dB, an amplitude variation of /spl plusmn/0.5 dB from an ideal linear edge, and negligible group delay in transmission. Using the grating filters, we demonstrate power equalization, with no observed variation in signal levels after compensation, for three WDM signals having >6-dB difference in power levels before amplification. Our technique can also be extended to provide active power equalization by incorporating a feedback loop.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1041-1135
1941-0174
DOI:10.1109/68.853512