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Proceedings Paper

All-optical switch with NOLM structure based on a 3x3 collinear fiber coupler
Author(s): Ya Jie Li; Chong Qing Wu; Song Nian Fu; Hui Dong
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Paper Abstract

All-optical switch is a key component for all-optical communication and switching; we demonstrate an all-optical switch with two switched output-ports like a nonlinear optical loop mirror (NOLM)based on a 3x3 collinear fiber coupler. After introducing the principle in this paper we give some pulse switching experimental results. In order to avoid high power laser system and save the cost the NOLM loop is made up of 12km G.652 fiber, the extinction ratio of switching signal is more than 20dB. Further we optimize the loop and EDFA, without reducing the extinction ratio we observe the pulse switching in a loop length less than 6km G.652 fiber. Compared to conventional optical switches, this type switch can support two switched output-ports which act complementarily at the same time, this character is practical for optical switching, and data signal can be selected to one of the multi-output ports by optical control signal.

Paper Details

Date Published: 11 February 2005
PDF: 5 pages
Proc. SPIE 5625, Optical Transmission, Switching, and Subsystems II, (11 February 2005); doi: 10.1117/12.572709
Show Author Affiliations
Ya Jie Li, Beijing Jiaotong Univ. (China)
Chong Qing Wu, Beijing Jiaotong Univ. (China)
Song Nian Fu, Beijing Jiaotong Univ. (China)
Hui Dong, Beijing Jiaotong Univ. (China)

Published in SPIE Proceedings Vol. 5625:
Optical Transmission, Switching, and Subsystems II
Cedric F. Lam; Wanyi Gu; Norbert Hanik; Kimio Oguchi, Editor(s)

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