29 November 2000 Photorefractive holographic interferometer sensor integrated in a single block of photochromic Fe:Mn:LiNbO3 crystal
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Abstract
Photorefractive doubly doped Fe:Mn:LiNbO3 crystal is the most promising material to record nonvolatile photorefractive holograms by photochromic effect, and is very useful for the reconfigurable integration of miniaturized optical 3-D systems within a crystal substrate. In this paper by recording few nonvolatile and spatially- local holographic gratings in a single block of photochromic Fe:Mn:LiNbO3 photorefractive crystal, we presented a new technique to implement miniaturized Mach-Zehnder interferometer sensor integrated in bulk sample(s). The interferometer was self-adaptive and used to detect or monitor the temperature changes as one arm of the interferometer is exposed in a thermal field. The design and analysis on the performance are shown, and the experimental results are given. This sensor has the advantage of simple construction over the conventional sensor and optical fiber sensor.
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Jianlang Li, Liren Liu, Yingchun Guo, Changhe Zhou, "Photorefractive holographic interferometer sensor integrated in a single block of photochromic Fe:Mn:LiNbO3 crystal", Proc. SPIE 4114, Photonic Devices and Algorithms for Computing II, (29 November 2000); doi: 10.1117/12.408558; https://doi.org/10.1117/12.408558
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