New approach to cross-polarized optical coherence tomography based on orthogonal arbitrarily polarized modes
✍ Scribed by V. M. Gelikonov; G. V. Gelikonov
- Publisher
- John Wiley and Sons
- Year
- 2006
- Tongue
- English
- Weight
- 189 KB
- Volume
- 3
- Category
- Article
- ISSN
- 1612-2011
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✦ Synopsis
A novel cross-polarized optical coherence tomography
(CP OCT) system is developed, which is based on standard isotropic
single-mode fiber. We exploit the property of an arbitrary pair of
orthogonal waves propagating in a single-mode fiber to maintain
their orthogonality in the absence of anisotropy losses,
regardless of the induced phase anisotropy. The well-known
isotropic fiber based OCT scheme that commonly comprises an
optical probe with a Fizeau interferometer and a compensating
Michelson interferometer with Faraday mirrors is modified. We
introduce an additional optical element to form the initial
radiation into two mutually time-delayed and coherent waves that
have strictly orthogonal polarizations. The suggested scheme
allows implementation of several variants of independent detection
of the initial and orthogonal polarizations with a low level of
optical coupling between channels.