Title

Phase Noise And Phase Modulation In Optical Coherence Tomography

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.

Publication Date

5-20-2004

Publication Title

Applied Optics

Volume

43

Issue

15

Number of Pages

3010-3017

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1364/AO.43.003010

Socpus ID

2542607717 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/2542607717

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