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Propagation-mode-controlled fabrication of self-written waveguide in photosensitive polyimide for single-mode operation

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6 Author(s)
Yamashita, K. ; Dept. of Electron. & Inf. Sci., Kyoto Inst. of Technol., Japan ; Kuro, T. ; Oe, K. ; Mune, K.
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We have developed a new fabrication method of single-mode self-written waveguide by controlling the propagation mode in an optical fiber. This method is very appropriate for repeatable fabrication of the single-mode self-written waveguide. Since a Gaussian-like near-field pattern is required for the fabrication of a tiny and uniform waveguide core, the propagation mode in a conventional optical communication fiber was controlled by coupling with an optical fiber having 3-μm core, which shows a single-mode operation at visible wavelength region. Single-mode propagation at optical communication wavelength was confirmed for the fabricated self-written waveguide. The evaluated core diameter of the self-written waveguide was ∼9.5 μm.

Published in:

Photonics Technology Letters, IEEE  (Volume:17 ,  Issue: 4 )

Date of Publication:

April 2005

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