06501551 is referenced by 428 patents and cites 4 patents.

An imaging system for performing optical coherence tomography includes an optical radiation source; a reference optical reflector; a first optical path leading to the reference optical reflector; and a second optical path coupled to an endoscopic unit. The endoscopic unit preferably includes an elongated housing defining a bore; a rotatable single mode optical fiber having a proximal end and a distal end positioned within and extending the length of the bore of the elongated housing; and an optical system coupled to the distal end of the rotatable single mode optical fiber, positioned to transmit the optical radiation from the single mode optical fiber to the structure and to transmit reflected optical radiation from the structure to the single mode optical fiber. The system further includes a beam divider dividing the optical radiation from the optical radiation source along the first optical path to the reflector and along the second optical path; and a detector positioned to receive reflected optical radiation from the reflector transmitted along the first optical path and reflected optical radiation transmitted from the structure along the second optical path. The detector generates a signal in response to the reflected optical radiation from the reference reflector and the reflected optical radiation from the structure, and a processor generating a image of the structure in response to the signal from the detector. The system provides both rotational and longitudinal scanning of an image.

Title
Fiber optic imaging endoscope interferometer with at least one faraday rotator
Application Number
9/414293
Publication Number
6501551 (B1)
Application Date
October 5, 1999
Publication Date
December 31, 2002
Inventor
James G Fujimoto
Cambridge
MA, US
Eric A Swanson
Acton
MA, US
Mark Brezinski
Malden
MA, US
Brett E Bouma
Boston
MA, US
Stephen A Boppart
Boston
MA, US
Guillermo Tearney
Cambridge
MA, US
Agent
Testa Hurwitz & Thibeault
US
Assignee
Massachusetts Institute of Technology
MA, US
IPC
G01B 9/02
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