Title :
Optical protection switches for trunk transmission systems
Author :
Aida, Kazuo ; Nishi, Shigendo ; Nakagawa, Kiyoshi
Author_Institution :
Transmission Syst. Lab., NTT, Kanagawa, Japan
Abstract :
Two different types of optical matrix switches are presented for use as protection switches. One is an optoelectronic matrix switch using Si pin photodiodes. The first switch configuration offers two advantages for large matrix fabrication: high off-state output impedance and no electrical power requirement for establishing the off-state. The other is an optical-wavelength-division matrix switch, using an acoustooptic deflector, which requires minimal hardware for switching and realizes unlimited bandwidth. The switching speed, crosstalk, attainable matrix size, and optical source requirements are evaluated for both switches. Their protection system application schemes are clarified.<>
Keywords :
acousto-optical devices; optical communication equipment; optical deflectors; optical links; optoelectronic devices; photodiodes; switches; Si pin photodiodes; acoustooptic deflector; crosstalk; matrix size; off-state output impedance; optical matrix switches; optical source; optical-wavelength-division matrix switch; optoelectronic matrix switch; protection system application schemes; switching speed; trunk transmission systems; Bandwidth; Bit rate; Coaxial components; Hardware; High speed optical techniques; Optical crosstalk; Optical fiber networks; Optical switches; Protection; Transmission line matrix methods;
Conference_Titel :
Communications, 1988. ICC '88. Digital Technology - Spanning the Universe. Conference Record., IEEE International Conference on
Conference_Location :
Philadelphia, PA, USA
DOI :
10.1109/ICC.1988.13524
