Influence of electro-optical crystal flatness on indirect modulation signal for underwater blue-green laser communication

Biao Han; Wei Wang; Yunqiang Zheng; Kui Shi; Jiacheng Meng; Yulong Su; Tao Wang; Yi Han; Xiaoping Xie; Wei Zhao

doi:10.1117/12.2524680

10 May 2019 Influence of electro-optical crystal flatness on indirect modulation signal for underwater blue-green laser communication

Biao Han, Wei Wang, Yunqiang Zheng, Kui Shi, Jiacheng Meng, Yulong Su, Tao Wang, Yi Han, Xiaoping Xie, Wei Zhao

Author Affiliations +

Proceedings Volume 11068, Second Symposium on Novel Technology of X-Ray Imaging; 1106823 (2019) https://doi.org/10.1117/12.2524680
Event: Second Symposium on Novel Technology of X-Ray Imaging, 2018, Hefei, China

Abstract

Indirect modulation with electro-optical crystal is a useful way to generate optical signal for underwater blue-green laser communication. However, as crystal surface is not strictly flat in practical application, light intensity distribution in the cross section is non-uniform, which would affect extinction ratio of modulated signal and system performance. In this letter, we study this issue with Monte Carlo method. The result shows that with the increase of crystal flatness, extinction ratio is decreasing dramatically, and it should be smaller than 0.78μm in order to make the extinction ratio greater than 10dB while 0.25μm for 20dB, 0.08μm for 30dB, and 0.025μm for 40dB.

Citation Download Citation

Biao Han, Wei Wang, Yunqiang Zheng, Kui Shi, Jiacheng Meng, Yulong Su, Tao Wang, Yi Han, Xiaoping Xie, and Wei Zhao "Influence of electro-optical crystal flatness on indirect modulation signal for underwater blue-green laser communication", Proc. SPIE 11068, Second Symposium on Novel Technology of X-Ray Imaging, 1106823 (10 May 2019); https://doi.org/10.1117/12.2524680

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