Optical-fiber-based position-sensitive detector for thermo-optic deflection studies

K. Rajasree; V. Vidyalal; Periasamy Radhakrishnan; V. P. N. Nampoori; C. P. G. Vallabhan

doi:10.1117/12.168245

1 June 1994 Optical-fiber-based position-sensitive detector for thermo-optic deflection studies

K. Rajasree, V. Vidyalal, Periasamy Radhakrishnan, V. P. N. Nampoori, C. P. G. Vallabhan

Author Affiliations +

Optical Engineering, Vol. 33, Issue 6, (June 1994). https://doi.org/10.1117/12.168245

Abstract

We describe the construction and operation of an optical-fiber-based position-sensitive detector and a few of its applications. The p01-shed tip of a multimode fiber serves as an aperture with finite width and an avalanche photodiode coupled to the other end of the fiber functions as the optical detector. We demonstrate the utility of this detector system for imaging and mirage effect studies. Measurements made on a bulk sample of potassium nitrate (KNO₃) undergoing phase transition and surface imaging of a patterned brass disk are given as illustrations.

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K. Rajasree, V. Vidyalal, Periasamy Radhakrishnan, V. P. N. Nampoori, and C. P. G. Vallabhan "Optical-fiber-based position-sensitive detector for thermo-optic deflection studies," Optical Engineering 33(6), (1 June 1994). https://doi.org/10.1117/12.168245

Published: 1 June 1994

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