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Laser-to-fiber coupling scheme by utilizing a lensed fiber integrated with a long-period fiber grating

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2 Author(s)
Chen, W.T. ; Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan ; Wang, L.A.

An optical coupling scheme between a laser diode and a single-mode fiber utilizing a lensed fiber integrated with a long-period fiber grating is experimentally demonstrated and qualitatively analyzed. A long working distance of 110 μm and a coupling of 35% are obtained for a laser diode with an ellipticity of 2.5. The longitudinal and transverse tolerances at 1-dB excess loss are 26 and 2.5 μm, respectively.

Published in:

Photonics Technology Letters, IEEE  (Volume:12 ,  Issue: 5 )