05459570 is referenced by 627 patents and cites 1 patents.

A method and apparatus for performing various optical measurements is provided utilizing an optical coherence domain refrectometer (OCDR). A short coherence optical radiation source applies optical radiation through like optical paths to a sample and an optical reflector. The optical reflector is movable in accordance with a predetermined velocity profile to permit interferometric scanning of the sample, the resulting output having a Doppler shift frequency modulation. This output may be demodulated and detected to obtain desired measurements and other information. Additional information may be obtained by applying radiation from two or more sources at different wavelengths to the sample and reflector and by separately demodulating the resulting outputs before processing. Birefringent information may be obtained by polarizing the optical radiation used, by suitably modifying the polarization in the sample and reference paths and by dividing the output into orthogonal polarization outputs which are separately demodulated before processing.

Title
Method and apparatus for performing optical measurements
Application Number
692877
Publication Number
5459570
Application Date
March 16, 1993
Publication Date
October 17, 1995
Inventor
Joseph S Schuman
Boston
MA, US
Charles P Lin
Somerville
MA, US
Carmen A Puliafito
Weston
MA, US
James G Fujimoto
Cambridge
MA, US
David Huang
Cambridge
MA, US
Eric A Swanson
Maynard
MA, US
Agent
Wolf Greenfield & Sacks
Assignee
Massachusetts Institute of Technology
MA, US
IPC
G01D 9/02
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