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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 43, Iss. 15 — May. 20, 2004
  • pp: 3010–3017

Phase noise and phase modulation in optical coherence tomography

Pascale Parrein and Joachim Meier  »View Author Affiliations


Applied Optics, Vol. 43, Issue 15, pp. 3010-3017 (2004)
http://dx.doi.org/10.1364/AO.43.003010


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Abstract

The signal in optical coherence tomography is often modulated either in phase or by use of the Doppler modulation generated by a depth-scanning mechanism. The effect of each type of modulation on the signal’s amplitude is evaluated. The advantages of each type of modulation in terms of immunity to phase noise and penetration depth are discussed in relation to two envelope detection schemes, i.e., lock-in detection and rms-to-dc conversion. Phase noise due to drifts and demodulation instabilities causes distortion of the signal envelope and can be responsible in part for the speckle appearance of the image.

© 2004 Optical Society of America

OCIS Codes
(030.4280) Coherence and statistical optics : Noise in imaging systems
(060.2350) Fiber optics and optical communications : Fiber optics imaging
(060.5060) Fiber optics and optical communications : Phase modulation
(170.4500) Medical optics and biotechnology : Optical coherence tomography

History
Original Manuscript: September 11, 2003
Revised Manuscript: January 20, 2004
Published: May 20, 2004

Citation
Pascale Parrein and Joachim Meier, "Phase noise and phase modulation in optical coherence tomography," Appl. Opt. 43, 3010-3017 (2004)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-43-15-3010

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