Room-temperature operation of widely tunable loss filter

Shu, Xuewen, Allsop, Thomas D.P., Gwandu, Bashir, Zhang, Lin and Bennion, Ian (2001). Room-temperature operation of widely tunable loss filter. Electronics letters, 37 (4), pp. 216-218.


A widely tunable and room-temperature operationable loss filter based on a long-period fibre grating (LPFG) fabricated in a B/Ge codoped fibre is reported. The filter exhibits extremely high temperature sensitivity. A maximum spectral shift of -48.1 nm from 10 to 40°C is achieved, corresponding to a thermal tuning efficiency of 1.6nm/°C. This value is increased by more than one order of magnitude compared with the LPFGs fabricated in standard telecom fibre, and even twice that of a LPFG with sensitivity enhanced by a special polymer.

Publication DOI:
Divisions: Engineering & Applied Sciences > Institute of Photonics
Engineering & Applied Sciences > Electrical, electronic & power engineering
Uncontrolled Keywords: boron componds,diffraction gratings,germanium compounds,optical fibre filters,Electrical and Electronic Engineering
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Published Date: 2001-02-15
Authors: Shu, Xuewen
Allsop, Thomas D.P.
Gwandu, Bashir
Zhang, Lin ( 0000-0002-1691-5577)
Bennion, Ian

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