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1. (WO2015113246) DEVICE FOR COUPLING LASER AND OPTICAL FIBER AND OPTICAL SIGNAL TRANSMISSION SYSTEM AND METHOD

Pub. No.:    WO/2015/113246    International Application No.:    PCT/CN2014/071752
Publication Date: Aug 6, 2015 International Filing Date: Jan 29, 2014
IPC: G02B 6/42
G02B 6/24
G02B 6/26
Applicants: HUAWEI TECHNOLOGIES CO., LTD.
华为技术有限公司
Inventors: ZHANG, Can
张灿
Title: DEVICE FOR COUPLING LASER AND OPTICAL FIBER AND OPTICAL SIGNAL TRANSMISSION SYSTEM AND METHOD
Abstract:
A device for coupling a laser and an optical fiber and an optical signal transmission system and method. A coupling device is arranged between the laser and the optical fiber. The coupling device comprises an optical signal transmission component with a graded internal refractive index. The closer to the central axis, the larger the refractive index of the optical signal transmission component. The optical signal transmission component can be used to shape an optical signal (comprising converging and diverging the optical signal) incident from the laser, so that the mode field radius of the shaped optical signal is identical to the core diameter of the optical fiber, and the shaped optical signal can be efficiently coupled into the optical fiber.