A micron precision fiber bundle coupler for confocal endomicroscope

Xiaoxiao Ma; Yong Deng; Qian Liu

doi:10.1117/12.2573741

10 October 2020 A micron precision fiber bundle coupler for confocal endomicroscope

Xiaoxiao Ma, Yong Deng, Qian Liu

Proceedings Volume 11553, Optics in Health Care and Biomedical Optics X; 1155304 (2020) https://doi.org/10.1117/12.2573741
Event: SPIE/COS Photonics Asia, 2020, Online Only

Abstract

Fiber bundle coupler is a key part in a probe-based endomicroscope used to couple laser in each core of the fiber bundles precisely when the laser scan unit is performing a high speed confocal scanning. Common fiber connector is usually used in communication application with single fiber core. But for image transmitting, common connector such as SMA must be manually adjusted in 5 axes to locate all fiber cores of the bundle. A micron precision fiber bundle coupler is introduced in this article. This coupler is special designed for an endomicroscope. This coupler can locate the position of the fiber cores of a bundle in micro precision in all 3 dimensions with the help of the mechanical structure and focusing mechanism. The coupler has a plug and a socket component. A polished fiber bundle is installed in the center of the plug. A connection core is located in the center of the socket component to make sure the plug and the coupling objective can stay in a same axis, so that the fiber bundle can also located in the same axis. A number of arms distributed symmetrically can be pushed by the operating cover to apply a constant pressure on the plug through a spring to lock the plug. The coupling objective can move along the axis inside the connection core by a linear actuator. An image evaluation algorithm can help the actuator to find a proper location to achieve auto focus. The coupler can work smoothly and automatically. It is very easy for clinical use.

Conference Presentation

Citation Download Citation

Xiaoxiao Ma, Yong Deng, and Qian Liu "A micron precision fiber bundle coupler for confocal endomicroscope", Proc. SPIE 11553, Optics in Health Care and Biomedical Optics X, 1155304 (10 October 2020); https://doi.org/10.1117/12.2573741

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