Tuning of long-period fibre gratings written by CO/sub 2/ laser with resonant transmission below -45 dB
作者： R. Slavík , F. Todorov
DOI: 10.1049/EL:20072881
关键词:
摘要: Long-period fibre gratings (LPGs) that were made to have resonant transmission below −45 dB are tuned via their simultaneous bending and straining. It was found the position of LPG resonance can be over more than 6 nm, maintaining level −45 dB. Fine tuning without a change in its spectral is also demonstrated. The reported LPGs should satisfy strictest requirements on control filtering characteristics, especially terms phase response.
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