Abstract
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.
Original language | English |
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Pages (from-to) | 216-218 |
Number of pages | 3 |
Journal | Electronics letters |
Volume | 37 |
Issue number | 4 |
DOIs | |
Publication status | Published - 15 Feb 2001 |
Keywords
- boron componds
- diffraction gratings
- germanium compounds
- optical fibre filters