Abstract
An asymmetric long period fiber grating (LPFG) with a large attenuation of -47.39 dB and a low insertion loss of 0.34 dB is fabricated by use of focused C O2 laser beam to carve periodic grooves on one side of the optical fiber. Such periodic grooves and the stretch-induced periodic microbends can effectively enhance the refractive index modulation and increase the average strain sensitivity of the resonant wavelength of the LPFG to -102.89 nmmε. The resonant wavelength and the peak attenuation of the LPFG can be tuned by ∼12 nm and ∼20 dB, respectively, by the application of a stretching force.
Original language | English |
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Article number | 151105 |
Journal | Applied Physics Letters |
Volume | 89 |
Issue number | 15 |
DOIs | |
Publication status | Published - 20 Oct 2006 |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)