Loading patent…
AssigneesShanghai Institute of Optics And Fine Mechanics, Chinese Academy of Sciences, Shanghai Zhongke Shenguang Optoelectronic Industry Co., Ltd.
InventorsPeipei HOU, Jianfeng SUN, Zhiyong LU, Yu ZHOU, Yiqun WANG, Lijuan WANG, Yueli XI
Estimating the term…
An apparatus and method herein efficiently couple spatial light to optical fiber light for achieving stability of an optical axis without a position sensor. The basic concept of the method includes: first, obtaining, according to a theoretical coupling efficiency model, a model parameter by means of fitting calculation; second, using a four-point tracking algorithm to calculate an optical fiber nutation trajectory according to the optical fiber nutation principle; and finally, using the nutation trajectory to calculate the position deviation of a central point. The optical axis is ensured to be stable by correcting the position deviation, and the high coupling efficiency remains. The method is used for the stability of the optical axis in a space coherent laser communication DPSK link. The high efficiency coupling is a key technology of long-distance, high bit rate transmission in space laser communication, and is significant in the development of inter-satellite optical communications.
A method of coupling spatial light to optical fiber light without a position detector for obtaining a stable optical axis, which is applied to a device comprising an optical fiber coupler and a two-dimensional fast scanning galvanometer, wherein the method comprises at least the following steps:
A device of coupling spatial light to optical fiber light without a position detector for obtaining a stable optical axis, which comprises:
Dependencies are inferred from the claim text.