We demonstrate long-period gratings whose attenuation can be changed by 25 dB in a 48-nm spectral band, with ambient index changes of only 2.7/spl times/10/sup -4/. This is achieved by inducing coupling to ultra sensitive cladding modes in engineered fiber waveguides.
Ultra-sensitive long period fiber gratings for broadband modulators and sensors
2003-01-01
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Conference paper
Electronic Resource
English
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