Weak optical fiber Bragg grating used as matched optical filter

Xiaoqin Lu; Anzhi He; Zhenhua Li

doi:10.1117/12.481485

30 August 2002 Weak optical fiber Bragg grating used as matched optical filter

Xiaoqin Lu, Anzhi He, Zhenhua Li

Proceedings Volume 4924, Holography, Diffractive Optics, and Applications; (2002) https://doi.org/10.1117/12.481485
Event: Photonics Asia, 2002, Shanghai, China

Abstract

From two aspects analyze the advantage ofweak optical fiber Bragg grating used as filter to filter the ASE noise of optical amplifier before the signal is detected. Firstly, we calculated the temporal response of the weak optical Bragg grating filter, the matched Bragg grating filter and the commonly used F-P filter. We find that the reflected pulse of weak optical Bragg grating closely resembles the triangular shape characteristic of a perfectly matched filter. It almost has no intersymbol interference. Whereas the pulse from a F-P transmission filter has a long decaying tail. This will lead to errors in detection. Secondly, we simulate the transmission process in computer. Calculating the power SNR(signal-to-noise ratio) of output signal with the same input signal filtered by the optical fiber Bragg grating, matched filter, F-P filter. Analyzing the improvement ofthe SNR after filtered by them. We find it also has advantage over F-P filter. Taking the two reasons into account, the weak optical fiber Bragg grating is superior to the widely used F-P filter. The weak optical fiber grating can be approximate used as a matched filter.

Citation Download Citation

Xiaoqin Lu, Anzhi He, and Zhenhua Li "Weak optical fiber Bragg grating used as matched optical filter", Proc. SPIE 4924, Holography, Diffractive Optics, and Applications, (30 August 2002); https://doi.org/10.1117/12.481485

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