Abstract
Several high-speed, long-span optical fiber transmission experiments have been reported up to 10Gb/s to explore the feasibility for future ultra high speed trunk line systems.1-3 These experiments indicated that the system suffered insufficient device frequency response, LD wavelength chirping and low receiver sensitivity to realize a high speed, long span transmission. We have confirmed feasibility of 10Gb/s optical transmissions using a high speed and low chirping MQW DFB-LD and a high quantum efficiency back-illuminated InGaAs-APD. Improved characteristics in frequency response, chirping and quantum efficiency made it possible to transmit 10Gb/s signal over 100km.
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