Display Settings:


Send to:

Choose Destination
Opt Express. 2007 Feb 19;15(4):1804-10.

Effect of macro-bending on resonant wavelength and intensity of long-period gratings in photonic crystal fiber.


We report the spectral characteristics of CO(2)-laser inscribed long-period gratings (LPGs) in endlessly single mode photonic crystal fiber (PCF) subject to macro-bending. The coupling modes as a result of bending were studied by examining the shifts of resonant wavelengths, the splits of attenuation bands, and the variation in coupling strength of the transmission spectra. A bending coefficient of ~ 27.9 nm.m was determined in the PCF at 180 degrees rotational orientation relative to the point of laser inscription in the curvature range from 2.6 m(-1) to 3.5 m(-1). Compared with conventional fiber LPGs fabricated using the same method, the PCF-based LPGs possess higher sensitivity both to bending and orientation, making them promising for sensor applications.

PubMed Commons home

PubMed Commons

How to join PubMed Commons

    Supplemental Content

    Icon for Optical Society of America
    Loading ...
    Write to the Help Desk