By Topic

A tunable photonic microwave notch filter based on all-optical mixing

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Jun Wang ; Sch. of Inf. Technol. & Eng., Univ. of Ottawa, Ont., Canada ; Jianping Yao

A novel photonic microwave notch filter based on all-optical mixing using a single narrow-linewidth optical source is proposed. In the proposed filter, the optical carrier emitted from a laser source is externally intensity modulated by a subcarrier signal and then applied to a second intensity modulator, which is driven by a local radio-frequency (RF) source with a dc bias to suppress the even-order sidebands. Since the higher odd-order sidebands have a much lower power than the first-order sidebands, only two first-order sidebands are considered with the subcarrier signal transferred to the two sidebands via optical mixing. By using a linearly chirped fiber Bragg grating as a dispersive device to introduce time delays, a two-tap photonic microwave notch filter is realized. The tunability of the proposed filter is achieved by adjusting the frequency of the local RF signal. Based on the proposed architecture, a two-tap microwave notch filter with a free spectral range tunable from 2.1 to 4.2 GHz is experimentally demonstrated.

Published in:

Photonics Technology Letters, IEEE  (Volume:18 ,  Issue: 2 )