Phase-Slope and Group-Dispersion Calculations in the Frequency Domain by Simple Optical Low-Coherence Reflectometry
Applied Optics, Vol. 42, Issue 34, pp. 6959-6966 (2003)
http://dx.doi.org/10.1364/AO.42.006959
Acrobat PDF (264 KB)
Abstract
We report a new method by which phase slope and group dispersion can be calculated with a simple optical low-coherence reflectometer to quantify physiological conditions. A discrete-time signal processing algorithm based on the first and second derivatives of the phase with respect to wave number was developed from discrete-time Fourier properties. The algorithm avoids the 2π ambiguity associated with most phase unwrapping. Experimental data collected by use of well-characterized optical materials validated the algorithm, which was minimally sensitive to phase noise. The group dispersion of bovine cornea was measured at various hydrations and was significantly dependent on hydration. The results suggest that group dispersion is an indicator of corneal alterations.
© 2003 Optical Society of America
OCIS Codes
(070.6020) Fourier optics and signal processing : Continuous optical signal processing
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(170.4500) Medical optics and biotechnology : Optical coherence tomography
(260.2030) Physical optics : Dispersion
Citation
Young L. Kim, Joseph T. Walsh, Jr., and Matthew R. Glucksberg, "Phase-Slope and Group-Dispersion Calculations in the Frequency Domain by Simple Optical Low-Coherence Reflectometry," Appl. Opt. 42, 6959-6966 (2003)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-42-34-6959
You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
Related Journal Articles 
- Phase-shifting algorithms for nonlinear and spatially nonuniform phase shifts: comment (JOSAA)
- Differential phase contrast in optical coherence tomography (OL)
- Laboratory Imaging Stellar Interferometer with Fiber Links (AO)
- Quantitative differential phase measurement and imaging in transparent and turbid media by optical coherence tomography (OL)
- Spectroscopic phase-dispersion optical coherence tomography measurements of scattering phantoms (OE)
Related Conference Papers
- Group Refractive Index Dispersion Measurement Using Low-Coherence Tandem Interferometer
- High Resolution, Dispersion Measurement of Photonic Waveguides
- Chromatic Dispersion Measurement for a Few-Mode Fiber Using Optical Frequency-Domain Reflectometer
- High Resolution, Dispersion Measurement of Photonic Waveguides
- Chromatic Dispersion Measurement for a Few-Mode Fiber Using Optical Frequency-Domain Reflectometer
OSA is a member of 