Title :
Signal-to-noise ratio measurement of a 2.5-Gb/s spectrum-sliced incoherent light channel
Author_Institution :
Dept. of Electron. Eng., Kwangwoon Univ., Seoul, South Korea
Abstract :
We have measured the signal-to-noise ratio (SNR) of a 2.5-Gb/s spectrum-sliced incoherent light channel in the large beat-noise limit. SNR changes strongly in time depending on the receiver electrical filter and the extinction ratio. Except for some minor differences, the SNR behaved quite similar to the theory. In order to obtain a high SNR, the nonreturn-to-zero format should be used rather than the return-to-zero format and the receiver sampling time should be chosen more precisely than that of conventional receivers.
Keywords :
digital communication; noise measurement; optical fibre communication; optical noise; optical variables measurement; 2.5 Gbit/s; NRZ format; SNR measurement; beat-noise limit; extinction ratio; nonreturn-to-zero format; receiver electrical filter; receiver sampling time; signal-to-noise ratio; spectrum-sliced incoherent light channel; Bandwidth; Bit rate; Delay effects; Extinction ratio; Optical filters; Optical receivers; Signal restoration; Signal to noise ratio; Thermal degradation; Time measurement;
Journal_Title :
Photonics Technology Letters, IEEE
