PHASE MEASUREMENT USING A BIAS DERIVATIVE SHIFT TECHNIQUE IN THE PHASE DIFFERENTIATION METHOD

Hideo Furuhashi, Ryota Sugiyama, Yoshiyuki Uchida, Kiyofumi Matsuda, Chander P. Grover

Abstract

An improvement to phase measurement systems based on differentiation filters is proposed. The new technique involves calculations from measurements conducted using two different phase derivative biases. Advantages of the system are that it can be applied to semiopaque objects, and that the effects of non-uniformities in the intensity of the light source are negligible. Computer simulations are performed to verify the effectiveness of the technique.

Keywords

phase measurement, differentiation filter, phase derivative

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PWC-2003-TC2-021.pdf

DOI

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IMEKO TC

TC2 - Photonics

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