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Adebayo, Adedotun; Yan, Zhijun; Zhang, Lin; Fu, Hongyan; Robinson, David (2013)
Languages: English
Types: Article
We report an efficient power tapping device working in near infra-red (800 nm) wavelength region based on UV-in- scribed 45° tilted fiber grating (45°-TFG) structure. Five 45°-TFGs were UV-inscribed in hydrogenated PS750 fiber using a custom-designed phase mask with different grating lengths of 3 mm, 5 mm, 9 mm, 12 mm and 15 mm, showing polarization dependent losses (PDLs) of 1 dB, 3 dB, 7 dB, 10 dB and 13 dB, respectively. The power side-tapping efficiency is clearly depending on the grating strength. It has been identified that the power tapping efficiency increases with the grating strength and deceases along the grating length. The side-tapped power profile has also been examined in azimuthal direction, showing a near-Gaussian distribution. These experimental results clearly demonstrated that 45°- TFGs may be used as in-fiber power tapping devices for applications requiring in-line signal monitoring.
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    • G. Meltz, W. W. Morey and W. H. Glenn, “In-Fiber Bragg Grating Tap,” Optical Fiber Communication Conference, OFC'90, San Francisco, 23 January 1990, 1 p.
    • T. Erdogan and J. E. Sipe, “Tilted Fiber Phase Gratings,” Journal of the Optical Society of America A-Optics Image Science and Vision, Vol. 13, No. 2, 1996, pp. 296- 313.
    • S. Mihailov, R. Walker, T. Stocki and D. Johnson, “Fabrication of a Tilted Fiber-Grating Polarization-Dependent Loss Equalizer,” Bragg Gratings, Optical Society of America (OSA), Stresa, 4 July 2001, 3 p.
    • P. S. Westbrook, T. A. Strasser and T. Erdogan, “In-Line Polarimeter Using Blazed Fiber Gratings,” IEEE Photonics Technology Letters, Vol. 12, No. 10, 2000, pp. 1352- G. Nemova, J. Chauve and R. Kashyap, “Design of Sidetap Fiber Bragg Grating Filters,” Optics Communications, Vol. 259, No. 2, 2006, pp. 649-654.
    • doi:10.1016/j.optcom.2005.09.064
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