Power Tapping Function in Near Infra-Red Region Based on 45° Tilted Fiber Gratings

DOI: 10.4236/opj.2013.32026   PDF   HTML     3,288 Downloads   4,860 Views   Citations


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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A. Adebayo, Z. Yan, K. Zhou, L. Zhang, H. Fu and D. Robinson, "Power Tapping Function in Near Infra-Red Region Based on 45° Tilted Fiber Gratings," Optics and Photonics Journal, Vol. 3 No. 2, 2013, pp. 158-162. doi: 10.4236/opj.2013.32026.

Conflicts of Interest

The authors declare no conflicts of interest.


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