Novel multiwavelength Er3+-doped fiber laser with double-pass Mach-Zehnder comb filter

Honglin An; Hongdu Liu; Xiang Zhi Lin; Edwin Y. B. Pun; Po Sheun Chung

doi:10.1117/12.312859

19 June 1998 Novel multiwavelength Er³⁺-doped fiber laser with double-pass Mach-Zehnder comb filter

Honglin An, Hongdu Liu, Xiang Zhi Lin, Edwin Y. B. Pun, Po Sheun Chung

Proceedings Volume 3420, Optical Fiber Communication; (1998) https://doi.org/10.1117/12.312859
Event: Asia Pacific Symposium on Optoelectronics '98, 1998, Taipei, Taiwan

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.

Citation Download Citation

Honglin An, Hongdu Liu, Xiang Zhi Lin, Edwin Y. B. Pun, and Po Sheun Chung "Novel multiwavelength Er³⁺-doped fiber laser with double-pass Mach-Zehnder comb filter", Proc. SPIE 3420, Optical Fiber Communication, (19 June 1998); https://doi.org/10.1117/12.312859

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