Long-period grating fabricated by periodically tapering standard single-mode fiber

Li Yang Shao, Jian Zhao, Xinyong Dong, Hwa Yaw Tam, Chao Lu, Sailing He

Research output: Journal article publicationJournal articleAcademic researchpeer-review

50 Citations (Scopus)


We fabricated an asymmetric long-period grating (LPG) by periodically tapering a section of standard single-mode fiber using a resistive filament heating. The LPG exhibits large peak transmission attenuation of -30.31 dB with only 22 periods in a 1.0 cm long optical fiber and possesses unique characteristics for sensing applications. The bending and strain sensitivities are 1.74 nm m and 1.11 pm/με, respectively. The polarization dependent loss is large, up to 11.65 dB, which is caused by an asymmetric index profile in the cross section of the tapered LPG.
Original languageEnglish
Pages (from-to)1549-1552
Number of pages4
JournalApplied Optics
Issue number10
Publication statusPublished - 1 Apr 2008

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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