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Proceedings Paper

Wavelength monitoring of DWDM systems using a polarization interference filter without reference light
Author(s): Xiyao Chen; Shengyu Chen; Guimin Lin; Jianping Xie; Hai Ming
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Paper Abstract

A novel scheme for wavelength monitoring of DWDM systems was proposed in which the two transmission spectra of a polarization interference filter (PIF) are employed. The filter consists of a polarizer, a polarizing beamsplitter (PBS) and a birefringent plate sandwiched between them. The birefringent plate used is made of yttrium orthovanadate (YVO4) crystal. The two transmission spectra with perpendicular polarization directions are complementary in light transmittivity. By designing the filter and controlling its temperature appropriately, the intersections of the two transmission spectra can be utilized to monitor operating wavelengths in a DWDM network. This scheme doesn't need reference light for wavelength sensing. In addition, the monitoring sensitivity is twice as large as that in the way that only one transmission spectrum is utilized.

Paper Details

Date Published: 3 October 2006
PDF: 6 pages
Proc. SPIE 6353, Optical Transmission, Switching, and Subsystems IV, 635338 (3 October 2006); doi: 10.1117/12.687101
Show Author Affiliations
Xiyao Chen, Minjiang Univ. (China)
Shengyu Chen, Minjiang Univ. (China)
Guimin Lin, Minjiang Univ. (China)
Jianping Xie, Univ. of Science and Technology of China (China)
Hai Ming, Univ. of Science and Technology of China (China)

Published in SPIE Proceedings Vol. 6353:
Optical Transmission, Switching, and Subsystems IV
Chang Soo Park; Shizhong Xie; Curtis R. Menyuk; Ken-ichi Kitayama, Editor(s)

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