Fault tolerant all-optical router with photorefractive all-optical switch

Toshiya Kaino; Atsushi Okamoto; Satoshi Honma

doi:10.1117/12.517020

8 August 2003 Fault tolerant all-optical router with photorefractive all-optical switch

Toshiya Kaino, Atsushi Okamoto, Satoshi Honma

Proceedings Volume 5123, Advanced Optical Devices, Technologies, and Medical Applications; (2003) https://doi.org/10.1117/12.517020
Event: 2003 Chapter books, 2003, Bellingham, WA, United States

Abstract

We propose a new type of the fault tolerant all-optical router (FTAR) by using an all-optical switch with photorefractive two-wave mixing. FTAR can detect a cutoff of a main transmitting line and automatically reroute a signal beam from the main line to a backup line. These functions can increase communication reliability of optical wireless. FTAR is composed of ony all-optical devices without any electronic devices or any mechanical operations. In the new type of FTAR, the routing of the signal beam is controlled by a control beam transmitting on the main line from a different light source at a receiver in the opposite direction with the signal beam. Compared with the previous type of FTAR composed of two photorefractinve crystals, the new configuration offers the simplification of the construction and high transmission efficiency of the signal beam. In this report, we experiment on the FTAR by usign a BaTiO₃ and Ar⁺ laser whose wavelength is 514.5nm, and confirm the fundamental fucntin of FTAR. We give comparison of the result with the numerical analysis. We also analyze the dependence of the switching time on the input beam intensity of the crystal by a numerical analysis and an experiment.

Citation Download Citation

Toshiya Kaino, Atsushi Okamoto, and Satoshi Honma "Fault tolerant all-optical router with photorefractive all-optical switch", Proc. SPIE 5123, Advanced Optical Devices, Technologies, and Medical Applications, (8 August 2003); https://doi.org/10.1117/12.517020

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