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Proceedings Paper

A novel optical tuning technology
Author(s): Nicolae Miron
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Paper Abstract

A novel optical tuning technology based on new non-resonant interferometer (Optune interferometer) is described. This interferometer has a totally reflective layer either parallel with a partially reflective layer or tilted with a small angle, with an adjustable air gap between them. An input fiber optic collimator delivers a free space collimated beam that is incident first on the totally reflective layer at a small incidence angle. This beam bounces many times between the two reflective layers. An output fiber optic collimator collects all the beams going through the partially reflective layer making them to interfere at the entrance aperture of the output fiber. The optical configuration has no resonant frequencies. A broadband signal at the input is available at the output as a comb with even spacing. Any arbitrary wavelength can be selected by adjusting accurately the gap size. Tuning across 90 nm range could require less than 10 &mgr;m change of the gap size. Some properties of Optune interferometer are: 240 nm tuning range, no tuning holes, 0.2 ms / 100 nm tuning speed, 1 pm tuning accuracy, 0.15 nm bandwidth, 1 dB insertion loss, 45 dB contrast, 0.2 dB flatness, 0.15 dB polarization dependent loss. Optune interferometer can be used either for filtering or for generating optical wavelengths in a broad range of applications such as optical monitoring of structures (FBG and Brillouin technologies), and in optical communications. U.S. Patent No. 7,002,696 covers Optune interferometer and also optical tuning technology based on it.

Paper Details

Date Published: 20 February 2007
PDF: 12 pages
Proc. SPIE 6469, Optical Components and Materials IV, 64690S (20 February 2007); doi: 10.1117/12.706823
Show Author Affiliations
Nicolae Miron, ROCTEST (Canada)

Published in SPIE Proceedings Vol. 6469:
Optical Components and Materials IV
Shibin Jiang; Michel J. F. Digonnet, Editor(s)

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