论文信息 - Ultrafast (200-fs switching, 1.5-Tb/s demultiplexing) and high-repetition (10 GHz) operations of a polarization-discriminating symmetric Mach-Zehnder all-optical switch

Ultrafast (200-fs switching, 1.5-Tb/s demultiplexing) and high-repetition (10 GHz) operations of a polarization-discriminating symmetric Mach-Zehnder all-optical switch

We demonstrate 200-fs switching and 1.5-Tb/s demultiplexing with a polarization-discriminating, symmetric Mach-Zehnder (PD-SMZ) all-optical switch. This switch is based on a highly efficient but slowly relaxing band-filling effect resonantly excited in a passive InGaAsP bulk waveguide. By using a mechanism that cancels out the effect of the slow relaxation, ultrafast switching is realized. The applicability of this mechanism to optical demultiplexing of well over 1 Tb/s is experimentally demonstrated for the first time. High-repetition operation at 10 GHz with the same nonlinearity used for the present ultrafast switching is also verified.

[1] Shigeru Nakamura,et al. Analysis of Subpicosecond Full-Switching with a Symmetric Mach-Zehnder All-Optical Switch , 1996 .

[2] Yoshimasa Sugimoto,et al. Ultrafast polarization‐discriminating Mach‐Zehnder all‐optical switch , 1995 .

[3] Y. Kawamura,et al. Femtosecond all-optical AND gates based on low-temperature-grown Be-doped strained InGaAs/InAlAs multiple quantum wells , 1995, LEOS '95. IEEE Lasers and Electro-Optics Society 1995 Annual Meeting. 8th Annual Meeting. Conference Proceedings.

[4] Katsumi Iwatsuki,et al. 160 Gbit/s single polarisation subpicosecond transform limited pulse signal demultiplexing using ultrafast optical loop mirror including MQW travelling wave semiconductor laser amplifier , 1994 .

[5] K. Tajima. All-Optical Switch with Switch-Off Time Unrestricted by Carrier Lifetime , 1993 .

[6] Yoshimasa Sugimoto,et al. High‐repetition operation of a symmetric Mach–Zehnder all‐optical switch , 1995 .

[7] J. P. Sokoloff,et al. A terahertz optical asymmetric demultiplexer (TOAD) , 1993, IEEE Photonics Technology Letters.

[8] K L Hall,et al. 40-Gbitys cascadable all-optical logic with an ultrafast nonlinear interferometer. , 1996, Optics letters.