Tunable stopband filter by using differential strains in all-fiber acoustooptical filter

This letter presents a tunable stopband filter by using an all-fiber acoustooptical tunable filter (AF-AOTF) subject to differential strains. With the proposed filter, narrow and wide tunable stopbands of 0.4-nm 12-dB bandwidth and 4-nm 12-dB bandwidth, respectively, are demonstrated by experiments....

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Published inIEEE photonics technology letters Vol. 17; no. 3; pp. 609 - 611
Main Authors Hao Li, Hao Li, Ying Zhang, Ying Zhang, Changyun Wen, Changyun Wen, Yeng Chai Soh, Yeng Chai Soh
Format Journal Article
LanguageEnglish
Published New York IEEE 01.03.2005
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Acoustooptical tunable filter (AOTF)
Acoustooptics
Band pass filters
band-rejection filter
Bandwidth
Capacitive sensors
Cascading
fiber optics
Optical attenuators
Optical distortion
Optical fiber filters
Optical fibers
optical filter
Optical filters
Optical pulses
Photonics
stopband filter
Strain
tunable filter
Tunable filters
Wavelength division multiplexing
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Summary:This letter presents a tunable stopband filter by using an all-fiber acoustooptical tunable filter (AF-AOTF) subject to differential strains. With the proposed filter, narrow and wide tunable stopbands of 0.4-nm 12-dB bandwidth and 4-nm 12-dB bandwidth, respectively, are demonstrated by experiments. Compared to the conventional approach of simply cascading two stages of AF-AOTFs to produce the same stopband, the proposed filter has improved the tunability of stopband.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2004.841009