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Delay and dispersion characteristics of a frequency-domain optical delay line for scanning interferometry
Andrei V Zvyagin1, Elwyn D J Smith, David D Sampson
1Optical+Biomedical Engineering Laboratory, Department of Electrical and Electronic Engineering, The University of Western Australia, 35 Stirling Highway, Crawley 6009, Western Australia, Australia. azvyagin@ee.uwa.edu.au
Abstract:
The reflective frequency-domain optical delay line employing a diffraction grating, a lens, and a tiltable mirror has emerged as a device particularly suitable for interferometry and optical coherence tomography. The device is comprehensively described, both theoretically and experimentally, in the context of interferometry. The variations of phase and group delay produced by the device as well as its dispersive properties are described and demonstrated experimentally.
