Uniform response high resolution tunable optical filtering using a grating-assisted acousto-optic device
Optics Express, Vol. 13, Issue 17, pp. 6438-6444 (2005)
http://dx.doi.org/10.1364/OPEX.13.006438
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Abstract
A new filtering technique is proposed that associates the high dispersion of standard reflection gratings with the tuning speed of acousto-optic cells. Tuning is performed by adjusting the grating period so that the chosen wavelength is at Bragg resonance. In this way, the selected wavelength always experiences a maximum diffraction efficiency, ensuring good uniformity. Using a commercial acousto-optic modulator, a wavelength selectivity of 0.075 nm is demonstrated together with a uniformity of ±0.2 dB on a tuning range of 2.2 nm corresponding to N = 30 resolvable frequencies. N > 600 could be obtained with an acousto-optic cell specially designed for this device.
© 2005 Optical Society of America
OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(120.2440) Instrumentation, measurement, and metrology : Filters
(230.1040) Optical devices : Acousto-optical devices
(300.6190) Spectroscopy : Spectrometers
(350.2460) Other areas of optics : Filters, interference
ToC Category:
Research Papers
History
Original Manuscript: June 22, 2005
Revised Manuscript: August 8, 2005
Published: August 22, 2005
Citation
David Bitauld, Isabelle Zaquine, Alain Maruani, and Robert Frey, "Uniform response high resolution tunable optical filtering using a grating-assisted acousto-optic device," Opt. Express 13, 6438-6444 (2005)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-13-17-6438
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