Comparative Study of Direct Image Transmission through Various Optical Fibers Using the Phase-Conjugate Wave
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概要
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In this article, we compare direct image transmissions through various multimode optical fibers, namely, step-index silica, graded-index silica, and step-index plastic fibers. We make use of a round-trip transmission in the optical fiber as well as a phase-conjugate wave generated by a self-pumped BaTiO3 crystal to recover a distorted image. The image was best recovered for a step-index silica fiber with a core diameter of 50 μm and $\mathit{NA}=0.18$ among three types of 1-m-long silica fibers. Step-index silica and plastic fibers with a length of 1 m could transmit an optical image up to a spatial resolution of 20 line pairs/mm. We successfully recovered a distorted image even after transmission over a 35.5-m-long step-index silica fiber. It is revealed that $\mathit{NA}$ as well as core diameter is an important factor for increasing the image quality in direct image transmission.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2007-08-15
著者
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Sakai Jun-ichi
Faculty Of Engineering Toyama University
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Ito Kenta
Faculty of Science and Engineering, Ritsumeikan University, Kusatsu, Shiga 525-8577, Japan
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Sakai Jun-ichi
Faculty of Science and Engineering, Ritsumeikan University, Kusatsu, Shiga 525-8577, Japan
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