Patent ID: 8139226
Filing Date: 2012-03-20
Classification: G01B,G01N,H04B

Abstract:
1. An optical coherence analysis system, comprising: a swept source laser for generating optical signals that are tuned over a scan band; an interferometer for transmitting the optical signals over a sample arm and reference arm and combining the optical signals to generate interference signals; a k-clock for generating a sampling clock indicating non-linearities in the frequency tuning of the optical signals over the scan band, the k-clock being not delay matched to propagation delays for the optical signals in the interferometer; a sampling system for sampling the interference signals from the interferometer in response to the k-clock; and a processing system for determining non-linearities in the frequency tuning of the optical signals using the k-clock during a calibration and for transforming the interference signals into an image of a sample in response to the non-linearities.