Type of Document	Master's Thesis
Author	Dutta, Anandi Kalyan
Author's Email Address	adutta6@tigers.lsu.edu, kalyananandi@yahoo.com
URN	etd-11182010-193155
Title	The Development of a Compact Optical System for a Forward-Looking Endoscope
Degree	Master of Science (M.S.)
Department	Electrical & Computer Engineering
Advisory Committee	Advisor Name Title Feldman, Martin Committee Chair Ajmera, Pratul K. Committee Member Hah, Dooyoung Committee Member
Keywords	GRIN lens MEMS forward-looking endoscope
Date of Defense	2010-11-16
Availability	unrestricted
Abstract ABSTRACT Optical Coherence Tomography has been effectively used for endoscopy in many previous studies. In this work, a 2 mm diameter forward-looking endoscope is developed with the help of MEMS technology and Optical Coherence Technology (OCT) to obtain in-vivo cross-sectional images of tissues or body cavities. The design consists of a GRIN lens, optical fiber and MEMS chip that are placed in line to fulfill the aim of achieving a 2 mm diameter probe. A standard assembly process has been established for the probe. An anisotropic etching was performed on the sample chip to create the V-groove for carrying the fiber properly. Furthermore, the sample chip was thinned at right thickness to fit in the 2 mm diameter stainless steel tube. Moreover, the optics relating the fiber and the GRIN lens has been tested. The light was transmitted through the core of the fiber and reflected back from the mirror of the GRIN lens. The reflecting angle of the rays was correct to hit the scanning mirror.
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