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Proceedings Paper

High-speed switching of a DFB grating in a twin-hole fibre
Author(s): Zhangwei Yu; Pierre-Yves Fonjallaz; Walter Margulis; Oleksandr Tarasenko
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Paper Abstract

A distributed-feedback (DFB) grating was written in twin-hole fibres with internal electrodes. Due to the intrinsic birefringence, the grating has two ultra-narrow peaks (~0.41 pm and ~0.27 pm) corresponding to x- and y-polarization. The separation between them can vary from 40 pm to 104 pm when the temperature increases from room temperature to 96°C. The dominant contributions of the Bragg wavelength shift as the increasing temperature are the change in refracitive index of the fibre and the expansion of the substrate (largest). Under the current pulses excitation, full on-off switching with response time ~2.5 ns has been achieved for x-polarization of the DFB grating.

Paper Details

Date Published: 11 November 2008
PDF: 8 pages
Proc. SPIE 7134, Passive Components and Fiber-based Devices V, 71341X (11 November 2008); doi: 10.1117/12.803671
Show Author Affiliations
Zhangwei Yu, Zhejiang Univ. (China)
Royal Institute of Technology (Sweden)
Pierre-Yves Fonjallaz, Acreo AB (Sweden)
Royal Institute of Technology (Sweden)
Walter Margulis, Acreo AB (Sweden)
Royal Institute of Technology (Sweden)
Oleksandr Tarasenko, Acreo AB (Sweden)
Royal Institute of Technology (Sweden)

Published in SPIE Proceedings Vol. 7134:
Passive Components and Fiber-based Devices V
Ming-Jun Li; Ping Shum; Ian H. White; Xingkun Wu, Editor(s)

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