Two-mode fiber acoustooptic tunable bandpass filter with zero frequency-shift

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We propose and experimentally demonstrate a novel configuration for an acoustooptic tunable bandpass filter based on intermodal coupling in a two-mode fiber. The double-pass scheme provides zero frequency-shift, bandwidth narrowing, and enhanced extinction ratio. A 3-dB bandwidth of 2.0 nm, insertion loss of 5.6 dB% and sidelobe suppression ratio of 14 dB were achieved. The wavelength tuning range was greater than 90 unit for the transmission dynamic range larger than 20 dB. Multiwavelength operation of a single device is achieved by simply applying multifrequency electrical signal. Unwanted intensity modulation of the multiwavelength filter is also investigated.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2006-07
Language
English
Article Type
Article
Keywords

POLARIZATION SENSITIVITY; SWITCHES

Citation

IEEE PHOTONICS TECHNOLOGY LETTERS, v.18, no.13-16, pp.1645 - 1647

ISSN
1041-1135
DOI
10.1109/LPT.2006.879529
URI
http://hdl.handle.net/10203/20447
Appears in Collection
PH-Journal Papers(저널논문)
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