Title :
10-Gb/s external modulation in optical CPFSK format
Author :
Sakamoto, Takahide ; Kawanishi, Tetsuya ; Miyazaki, Tetsuya ; Izutsu, Masayuki
Author_Institution :
Nat. Inst. of Inf. & Commun. Technol., Tokyo, Japan
fDate :
4/1/2006 12:00:00 AM
Abstract :
We demonstrated a synchronous control technique for external optical modulation in a format of continuous-phase frequency-shift keying (CPFSK) at 10 Gb/s. In this method, the FSK signal in the upper- or lower-sideband state synchronously shifts to the other state at the timing when their phases are the same. We investigated the accuracy of the timing control required for the synchronous control. Experimental results show that the allowable timing misalignment to keep power penalty of the receiver sensitivity less than 1 dB was more than 25 ps, 25% of each bit period.
Keywords :
optical fibre communication; optical modulation; phase shift keying; timing; 10 Gbit/s; CPFSK; continuous-phase frequency-shift keying; external modulation; synchronous control; timing control; Communication system control; Educational technology; Frequency modulation; Frequency shift keying; Optical filters; Optical modulation; Optical receivers; Optical sensors; Timing; Universal Serial Bus; Continuous-phase modulation; demodulation; electrooptic modulation; frequency modulation; optical fiber communication; optical modulation;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2006.873561