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Efficient miniature fiber-optic tunable filter based on intracore Bragg grating and electrically resistive coating

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6 Author(s)
Limberger, H.G. ; Inst. for Appl. Opt., Swiss Fed. Inst. of Technol., Lausanne, Switzerland ; Ky, Nguyen Hong ; Costantini, D.M. ; Salathé, R.P.
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An electrically tunable reflection filter based on a platinum-coated single-mode optical fiber that contains an intracore Bragg grating has been demonstrated. The device shows a dc tuning range of 2.15 nm with a corresponding electrical power of 0.54 W. Wavelength modulation (WM) has been observed at frequencies lower than 100 Hz. The wavelength shift depends linearly on the electrical input power. A maximum efficiency of 4.1 nm/W is obtained for dc tuning.

Published in:

Photonics Technology Letters, IEEE  (Volume:10 ,  Issue: 3 )