Fused-tapered fiber coupler all-optical switch using femtosecond optical pulses

Masaaki M. Imai; Masahito Kajinuma; Jun Nakai

doi:10.1117/12.328773

4 December 1998 A fused-tapered fiber coupler all-optical switch using femtosecond optical pulses

Masaaki M. Imai, Masahito Kajinuma, Jun Nakai

Proceedings Volume 3491, 1998 International Conference on Applications of Photonic Technology III: Closing the Gap between Theory, Development, and Applications; (1998) https://doi.org/10.1117/12.328773
Event: 1998 International Conference on Applications of Photonic Technology, 1998, Ottawa, Canada

Abstract

A fused-tapered fiber coupler, which is fabricated by fusing and elongating two single-mode fibers, exhibits a nonlinear coupling characteristics when it is excited with an intense light, since an intensity-dependent index of refraction is induced in fiber couplers due to optical Kerr effect. An abrupt change of power transmission at coupled and through ports in the coupler can be observed at certain wavelength of incident light and it was found that the critical wavelength is shifted into a longer wavelength as the incident power increases. The experimental verification using a mode-locked Ti:sapphire laser that produces 50 femtosecond pulses at wavelengths of 800 - 850 nm with a repetition rate of 80 MHz is followed by the theory.

Citation Download Citation

Masaaki M. Imai, Masahito Kajinuma, and Jun Nakai "A fused-tapered fiber coupler all-optical switch using femtosecond optical pulses", Proc. SPIE 3491, 1998 International Conference on Applications of Photonic Technology III: Closing the Gap between Theory, Development, and Applications, (4 December 1998); https://doi.org/10.1117/12.328773

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