Low thermal sensitivity grating devices based on ex-45° tilting structure capable of forward-propagating cladding modes coupling
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In: Journal of Lightwave Technology, Vol. 24, No. 12, 12.2006, p. 5087-5094.
Research output: Contribution to journal › Article › peer-review
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T1 - Low thermal sensitivity grating devices based on ex-45° tilting structure capable of forward-propagating cladding modes coupling
AU - Zhou, K.
AU - Zhang, L.
AU - Chen, Xianfeng
AU - Bennion, I.
PY - 2006/12
Y1 - 2006/12
N2 - The authors describe a detailed investigation on tilted fiber Bragg grating (TFBG) structures with tilted angles exceeding 45deg. In contrast to the backward mode coupling mechanism of Bragg gratings with normal and small tilting structures, the ex-45deg TFBGs facilitate the light coupling to the forward-propagating cladding modes. The authors have also theoretically and experimentally examined the mode coupling transition of TFBGs with small, medium, and large tilt angles. In particular, experiments are conducted to investigate the spectra and far-field distribution, as well as temperature, strain, and refractive-index sensitivities of ex-45deg devices. It has been revealed that these ex-45deg gratings exhibit ultralow thermal sensitivity. As in-fiber devices, they may be superior to conventional Bragg and long-period gratings when the low thermal cross sensitivity is required.
AB - The authors describe a detailed investigation on tilted fiber Bragg grating (TFBG) structures with tilted angles exceeding 45deg. In contrast to the backward mode coupling mechanism of Bragg gratings with normal and small tilting structures, the ex-45deg TFBGs facilitate the light coupling to the forward-propagating cladding modes. The authors have also theoretically and experimentally examined the mode coupling transition of TFBGs with small, medium, and large tilt angles. In particular, experiments are conducted to investigate the spectra and far-field distribution, as well as temperature, strain, and refractive-index sensitivities of ex-45deg devices. It has been revealed that these ex-45deg gratings exhibit ultralow thermal sensitivity. As in-fiber devices, they may be superior to conventional Bragg and long-period gratings when the low thermal cross sensitivity is required.
U2 - 10.1109/JLT.2006.884985
DO - 10.1109/JLT.2006.884985
M3 - Article
VL - 24
SP - 5087
EP - 5094
JO - Journal of Lightwave Technology
JF - Journal of Lightwave Technology
SN - 0733-8724
IS - 12
ER -