Design of wide-passband top-flattened and side-steepened acousto-optical tunable filter

Hong Zhang Hu; S. J. Zhang; W. Liu; F. Geng

doi:10.1117/12.444531

16 October 2001 Design of wide-passband top-flattened and side-steepened acousto-optical tunable filter

Hong Zhang Hu, S. J. Zhang, W. Liu, F. Geng

Proceedings Volume 4603, Fiber Optics and Optoelectronics for Network Applications; (2001) https://doi.org/10.1117/12.444531
Event: International Symposium on Optoelectonics and Microelectronics, 2001, Nanjing, China

Abstract

The acousto-optical tunable filter (AOTF) play a key role in the dense WDM systems. In this AOTF, tow parallel acoustical waveguides compose of a directorial coupler of surface acoustic wave (SAW). By using partial acoustical absorbers, we control the distribution of the acousto-optical coupling strength along the optical waveguide to appear four decaying lopes, and make the mode conversion characteristics of the filter approach to the ideal rectangular function. The calculation results show that the -1dB bandwidth of the filter is 3.9nm, the -10dB bandwidth is 5.2nm, the interval from,-DB to -1dB is only 0.63nm. So several optical wavelengths can be simultaneously filtered with only one RF frequency.

Citation Download Citation

Hong Zhang Hu, S. J. Zhang, W. Liu, and F. Geng "Design of wide-passband top-flattened and side-steepened acousto-optical tunable filter", Proc. SPIE 4603, Fiber Optics and Optoelectronics for Network Applications, (16 October 2001); https://doi.org/10.1117/12.444531

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