期刊
OPTICS EXPRESS
卷 17, 期 24, 页码 21882-21890出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.17.021882
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资金
- Hong Kong SAR Government through a GRF [PolyU5182/07E]
- NSF of China [60629401]
Long period gratings (LPGs) are fabricated by use of focused high frequency CO2 laser pulses to periodically modify the transverse dimension of silica microfibers. A 20-period LPG with a 27dB attenuation dip is realized in a microfiber with a diameter of similar to 6.3 mu m. The resonant wavelength has a negative temperature coefficient and a high sensitivity to external refractive index. The microfiber LPGs may be useful in micron scale in-fiber devices and sensors. (C) 2009 Optical Society of America
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