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22 October 2004 An athermal design on LPG-based tunable filter
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Abstract
In this paper, a unique all-fiber tunable filter based on the combination of single resonant band long period grating (LPG) and harsh environment electro-optic polymer second cladding layer is presented. The single resonant band LPG is used to select the resonant wavelength and the tuning of resonant wavelength is realized by changing the refractive index of electro-optic polymer cladding layer via external electric field. Although the basic operational principle and implementation of this unique tunable filter have been previously reported by authors, this paper is focused on athermal operation design and synthesis of harsh environment electro-optic polymer, which enhances the practicability of proposed tunable filter.
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Jonathan E. Lee, Corey A. Hahn, Sung-Hyun Nam, Bo Wang, Karl Reichard, Dave Ditto, Drew Glista, Qing Wang, and Shizhuo Yin "An athermal design on LPG-based tunable filter", Proc. SPIE 5560, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications X, (22 October 2004); doi: 10.1117/12.558657; https://doi.org/10.1117/12.558657
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