Effect of misalignment on rotating coupling efficiency of the Dove prism

Dagong Jia; Changsong Yu; WenCcai Jing; Hongxia Zhang; Yimo Zhang

doi:10.1117/12.756669

29 January 2008 Effect of misalignment on rotating coupling efficiency of the Dove prism

Dagong Jia, Changsong Yu, WenCcai Jing, Hongxia Zhang, Yimo Zhang

Proceedings Volume 6829, Advanced Materials and Devices for Sensing and Imaging III; 68290S (2008) https://doi.org/10.1117/12.756669
Event: Photonics Asia 2007, 2007, Beijing, China

Abstract

In the optical rotary joints, the Dove Prism is employed to rotate an image about the optical axis and compensate optical path of optical signals so that the optical signals can be transferred across the rotating interface. However, manufacturing errors and assembling errors of Dove Prism will affect the coupling efficiency of Dove Prism. In this paper, the analytical expressions for errors of the rotating coupling efficiency are presented when the prism is manufactured with errors in its base angle and pyramidal angle. The analytical result showed that the coupling losses that arise from manufacturing errors would increase as the base angles deviate from the traditional value of 45° and the pyramidal angle increase. At the same time, the influence of assembling errors on coupling efficiency is also analyzed using the method of light ray tracing. The assembling errors of Dove Prism included angular tilt misalignment, height misalignment, and inclining misalignment. The results indicated that these misalignments cause the coupling efficiency of Dove Prism decreased. The coupling efficiency is more sensitive to the height misalignment and angular tilt misalignment than the inclining misalignment.

Citation Download Citation

Dagong Jia, Changsong Yu, WenCcai Jing, Hongxia Zhang, and Yimo Zhang "Effect of misalignment on rotating coupling efficiency of the Dove prism", Proc. SPIE 6829, Advanced Materials and Devices for Sensing and Imaging III, 68290S (29 January 2008); https://doi.org/10.1117/12.756669

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available