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Highly selective and widely tunable 1.55-μm InP/air-gap micromachined Fabry-Perot filter for optical communications

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9 Author(s)
Spisser, A. ; LEAME, Ecole Centrale de Lyon, Ecully, France ; Ledantec, R. ; Seassal, C. ; Leclercq, J.L.
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The authors report, for the first time, a highly selective and widely tunable optical filter at 1.55 μm using a Fabry-Perot resonator with micromachined InP/air-gap distributed Bragg reflectors. The minimum resonance full-width at half-maximum (FWHM), as measured by microreflectivity experiments, is close to 0.4 mm (around 1.55 μm) and is compatible with wavelength-division multiplexing specifications of optical telecommunications. The tuning range is 62 nm for a tuning voltage of 14 V. The FWHM is kept below 1 nm over a 40 nm tuning range.

Published in:

Photonics Technology Letters, IEEE  (Volume:10 ,  Issue: 9 )