CO2 laser induced long period gratings in optical microfibers

Haifeng Xuan, Wei Jin, Min Zhang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

146 Citations (Scopus)


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 ̃6.3μm. 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.
Original languageEnglish
Pages (from-to)21882-21890
Number of pages9
JournalOptics Express
Issue number24
Publication statusPublished - 23 Nov 2009

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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