| Authors |
Dong-Soo Lee ; Hyun-Gue Huh |
| Keywords |
Optical Duobinary Transmitter ; Driving Voltage Ratios ; Mach-Zehnder(MZ) Modulator ; Low Pass Filter(LPF) ; Eye Diagram ; Bit Error Rate(BER) |
| Abstract |
We have theoretically investigated the asymmetry effects on 10[Gb/s] optical duobinary transmitters from the viewpoint of the driving voltage ratios by computer simulations. For driving voltage ratiost(=driving voltage/switching voltage) with smaller than 100[%], the transmission performance has been greatly affected by the asymmetry of the bandwidth of LPFs than that of the Mach-Zehnder Modulator driving voltage. On the other hand, for driving voltage ratios with 100[%], the transmission performance has been degraded by the asymmetry of the driving voltage and is not sensitive to that of the bandwidth of LPFs. For the transmission performance within 1[dB] power penalty under the asymmetry condition, the driving voltage ratio with 100[%] has performed better than the low driving voltage ratios. |