Presentation 2001/9/28
Development of Refractive-Index-Profile Measurement Technique For Optical Fiber Preforms
Fujio Katou, Issei Sasaki, Shingo Okazaki,
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Abstract(in English) The measurement of refractive index profile in optical fiber preforms is important in fiber industry to evaluate characteristics of optical fibers. This report presents a new method uses image distortion analysis for determining the ray deflection, which the index profiles can be numerically converted from. A reference pattern is located behind of the sample preform and distortion in its image taken through the preform may be observed if a distribution of refractive index exists in it. In previous report, a static angled knife-edge as reference pattern was used and then sample is restricted within axial-dependence free profiles. For applying the technique to wide range of types of preform, we introduce straight, scanning knife-edge. In order to confirm the method, we construct a test system and perform trial measurements using a tip taken near the end of the preform. The results show a good agreement to result obtained from strait part of the same preform without effect of the axially depending structure.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Optical fiber preform / Index profile measurement / Scanning knife-edge method
Paper # OFT2001-38
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Conference Information
Committee OFT
Conference Date 2001/9/28(1days)
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Paper Information
Registration To Optical Fiber Technology (OFT)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Development of Refractive-Index-Profile Measurement Technique For Optical Fiber Preforms
Sub Title (in English)
Keyword(1) Optical fiber preform
Keyword(2) Index profile measurement
Keyword(3) Scanning knife-edge method
1st Author's Name Fujio Katou
1st Author's Affiliation Hokkaido Institute of Technology()
2nd Author's Name Issei Sasaki
2nd Author's Affiliation Hokkaido Institute of Technology:Advanced Technology Inc.
3rd Author's Name Shingo Okazaki
3rd Author's Affiliation SEIKO EG&G
Date 2001/9/28
Paper # OFT2001-38
Volume (vol) vol.101
Number (no) 330
Page pp.pp.-
#Pages 6
Date of Issue