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Long-period gratings in wavelength-scale microfibers

Source: Opt. Lett. 35, 85 (2010); doi:10.1364/OL.35.000085

Published 2009-12-10

PUBLICATION DATA
ISSN:
1553-9601 (online)
Publisher:
AIP is a member of CrossRef OSA
Haifeng Xuan,1 Wei Jin,1 and Shujing Liu1
1Department of Electrical Engineering, The Hong Kong Polytechnic University, Hong Kong, China
We report the fabrication of long-period gratings (LPGs) in wavelength-scale microfibers with diameters from 1.5  to  3 µm. The LPGs were fabricated by use of a femtosecond IR laser to periodically modify the surface of the fibers. These LPGs have grating periods of a few tens of micrometers, much smaller than those in conventional optical fibers. A compact 10-period LPG with a device length of only ~150 µm demonstrated a strong resonant dip of >20 dB around 1330 nm. These microfiber LPGs would be useful in-fiber components for microfiber-based devices, circuits, and sensors. ©2009 Optical Society of America

(As supplied by publisher.)

History: Received 16 September 2009; revised 27 November 2009; accepted 30 November 2009; published 2009-12-10
Permalink: http://dx.doi.org/10.1364/OL.35.000085

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