Phase response measurement technique for waveguide grating filters
作者:
Cameron J. Brooks,
Gerald L. Vossler,
Kim A. Winick,
期刊:
Applied Physics Letters
(AIP Available online 1995)
卷期:
Volume 66,
issue 17
页码: 2168-2170
ISSN:0003-6951
年代: 1995
DOI:10.1063/1.113935
出版商: AIP
数据来源: AIP
摘要:
A simple interferometric technique is described which can be used to accurately measure the phase response of waveguide grating filters. A narrowband, tunable Ti:sapphire laser is used in a Michelson interferometer configuration, where light reflected from a waveguide grating filter is combined with a reference beam. The intensity of the combined beams is measured as the wavelength of the Ti:sapphire laser is tuned. The measured intensity exhibits a quasisinusoidal wavelength dependence, from which the phase response of the filter can be deduced. This method is successfully demonstrated using both an integrated optic waveguide grating filter and a bulk grating pair. ©1995 American Institute of Physics.
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