Title :
Optoelectronic cross-bar switching using free-space optical distribution
Author :
Rajkumar, N. ; McMullin, J.N. ; Keyworth, B.P.
Author_Institution :
Telecommun. Res. Lab., Canada
Abstract :
Free-space optical distribution for a 3/spl times/3 optoelectronic matrix switch in two configurations is demonstrated. Optical splitting is achieved using an integrated refractive-diffractive element which is a compact and mass-producible device. The electrical cross talk is -38.1 dB for the optical-in/electrical-out configuration and -38.3 for the electrical-in/electrical-out configuration. The ON-OFF contrast at the photodetectors is -69.5 dB. These results indicate that such an optical distribution system is more than adequate for high-speed digital switching.
Keywords :
diffraction gratings; electro-optical switches; integrated optics; integrated optoelectronics; lenses; optical crosstalk; optical interconnections; photodetectors; photonic switching systems; 3/spl times/3 optoelectronic matrix switch; ON-OFF contrast; compact; electrical cross talk; electrical-in/electrical-out configuration; free-space optical distribution; high-speed digital switching; integrated refractive-diffractive element; mass-producible; optical distribution system; optical splitting; optical-in/electrical-out configuration; optoelectronic cross-bar switching; optoelectronic switches; photodetectors; photonic switching systems; High speed optical techniques; Optical crosstalk; Optical fibers; Optical refraction; Optical scattering; Optical signal processing; Optical switches; Photodetectors; Sensor arrays; Telecommunication switching;
Journal_Title :
Photonics Technology Letters, IEEE
