DocumentCode
2524376
Title
Fast-fourier-transformation de-convolutions for a fabry-perot filter based OSA: demonstration of 15.0 dB increase of optical-rejection ratio at /spl I.chemo/25.0 GHz from peak
Author
Ke-Cai Zeng
Author_Institution
Sunrise Telecom Inc., 302 Enzo Drive, San Jose, CA 95138, U.S.A.
fYear
2004
fDate
28-30 Sept. 2004
Firstpage
19
Lastpage
22
Abstract
An optical spectrum analyzer (OSA) based on a tunable Fabry-Perot filter (TFPF) has been implemented. The TFPF has free spectrum range (FSR) of about 180 nm, finesse of about 7200, and 3-dB bandwidth of less than 80.0 pm. Its optical rejection ratio (ORR) at ±25.0 GHz away from its main transmission peak is about 24.5 dB. We demonstrated that Fast-Fourier-Transformation (FFT) de-convolutions can be employed to enhance its ORR by more than 15 dB at ±25.0 GHz. This is the first time that FFT de-convolutions have been demonstrated to greatly enhance the ORR of a TFPF for OSA applications (with one patent pending).
Keywords
Bandwidth; Diffraction gratings; Fabry-Perot; Optical devices; Optical feedback; Optical filters; Optical interferometry; Optical noise; Signal resolution; Wavelength measurement;
fLanguage
English
Publisher
ieee
Conference_Titel
Optical Fiber Measurements, 2004. Technical Digest: Symposium on
Conference_Location
Boulder, CO, USA
Print_ISBN
1-886843-37-6
Type
conf
DOI
10.1109/SOFM.2004.183466
Filename
1391919
Link To Document