Journal
IEEE PHOTONICS TECHNOLOGY LETTERS
Volume 16, Issue 10, Pages 2296-2298Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2004.833890
Keywords
extrinsic Fabry-Perot interferometer; laser bonding; tunable optical filter
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This letter describes a thermally tunable filter of extremely low cost, suitable for optical sensing, spectrometry, and video distribution. The filter utilizes a high-finesse extrinsic fiber Fabry-Perot interferometer formed by fusion bonding of two mirror-coated single-mode fibers to a short piece of borosilicate tubing. Continuous wavelength tuning is achieved using a Peltier device. We demonstrate a prototype filter operating at 1550 nm with a tuning range of 90.8 mn and a temperature sensitivity of 1.63 nm/degreesC. The filter features polarization independence, high repeatability, and inherently low drift and low insertion loss.
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