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Measurement Method and System of Optical Fiber-Based Beam Width Using a Reflective Grating Panel
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 Title & Authors
Measurement Method and System of Optical Fiber-Based Beam Width Using a Reflective Grating Panel
Lee, Yeon-Gwan; Jang, Byeong-Wook; Kim, Yoon-Young; Kim, Jin-Hyuk; Kim, Chun-Gon;
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 Abstract
An optical fiber-based beam width measurement technique is presented. The proposed system can be applied to the optical fiber industry in applications such as lensed fiber, optical fiber based laser beam source, and fiber optic sensor. The measurement system is composed of optical fiber, which is used as a transceiver, and a single grating panel which consists of a multi-reflection area with an even non-reflection area. The grating panel is used to vary the reflected light. When the widths of the reflection area and non-reflection area are larger than the optical beam width, the reflected light is varied at the interface between the reflection area and the non-reflection area by the movement of the grating panel. Experiments were conducted in order to verify the feasibility of the proposed technique. Multi-mode fiber combined with a collimator was selected as an emitter and a receiver, and the beam width measurement system was contrived. Subsequently, the proposed method and the system were verified by comparing the experimental results with the results of the conventional charge-coupled device technique.
 Keywords
Optical fiber;Beam width;Grating panel;Reflection area;Non-reflection area;Charge-coupled device;
 Language
English
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