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Proceedings Paper

Novel multiwavelength Er3+-doped fiber laser with double-pass Mach-Zehnder comb filter
Author(s): Honglin An; Hongdu Liu; Xiang Zhi Lin; Edwin Y. B. Pun; Po Sheun Chung
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Paper Abstract

Compact and stable multiwavelength lasers (MWL) are attractive for wavelength division multiplexing (WDM) system. Recently, multiwavelength Er3+-doped fiber lasers have been reported by several groups. In this paper, we proposed and demonstrate a novel fiber MWL by inserting a double-pass Mach-Zehnder (M-Z) interferometer as a comb filter in the fiber laser cavity. The two output ports of the fiber M-Z device are spliced with a piece of Er3+-doped fiber in between to provide the optical gain. One of the input ports is connected with a WDM fiber loop which totally reflects light at 1550 nm and transmits light at 980 nm, and the other input port is connected with a partially reflected fiber loop as the output reflector to the laser cavity. 10 lines lasing simultaneously are obtained when the Er3+-doped fiber is immersed into liquid nitrogen. By controlling the optical path difference between the two arms in the M-Z device, the lasing peak wavelengths and their spacings can be adjusted to meet the ITU recommendation for WDM applications.

Paper Details

Date Published: 19 June 1998
PDF: 7 pages
Proc. SPIE 3420, Optical Fiber Communication, (19 June 1998); doi: 10.1117/12.312859
Show Author Affiliations
Honglin An, City Univ. of Hong Kong (China)
Hongdu Liu, Peking Univ. (China)
Xiang Zhi Lin, Peking Univ. (China)
Edwin Y. B. Pun, City Univ. of Hong Kong (Hong Kong)
Po Sheun Chung, City Univ. of Hong Kong (Hong Kong)

Published in SPIE Proceedings Vol. 3420:
Optical Fiber Communication
Winston I. Way; Franklin F. Tong; Alan Eli Willner, Editor(s)

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