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光子学报  2005 

Research of Fiber-waveguide Automatic Alignment Aystem
光波导-光纤耦合对接自动化系统的研究

Keywords: Optical waveguide,Auto-aligning,Fiber,End-coupling,Coupling-loss,Genetic algorithm
光波导
,自动调芯,光纤,端面耦合,耦合损耗,遗传算法

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Abstract:

Three auto-aligning methods are designed,which are called the half value method, the barycenter one and the one based on genetic algorithm (GA),respectively.The auto-aligning system model is completed. Taking single mode fiber as standard waveguide,the experiment and the results show the average end-coupling losses are less than 0.1 dB,and the standard deviations are less than 0.012 dB at the wavelength 1310 nm and 1550 nm,respectively.This process only needs 2 minutes.When it comes to the experiment of fiber-SiO_2 waveguide,the results suggest the average end-coupling losses are not more than 0.15 dB,and the standard deviations are less than 0.025 dB at the wavelength 1310 nm and 1550 nm,respectively.The whole process is accomplished within 8 minutes.It shows that the methods and system have good performances.

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