Title :
High-frequency operation of a phase-locked loop-type clock regenerator using a 1*2 optical switch as a phase comparator
Author :
Takayama, K. ; Habara, K. ; Miyazawa, H. ; Himeno, A.
Author_Institution :
NTT Commun. Switching Lab., Tokyo, Japan
Abstract :
A phase-locked loop using a 1*2 optical switch is proposed as a high-frequency optical clock regenerator. A 1*2 LiNbO/sub 3/ optical switch and two photodetectors with a low-pass filter are used as a phase comparator. The pull-in and hold-in ranges are measured at the input clock frequency of 5 GHz using the switch with an 8 GHz bandwidth. Operation at 14 GHz is demonstrated.<>
Keywords :
clocks; integrated optics; lithium compounds; optical filters; optical switches; phase-locked loops; photodetectors; photodiodes; 1*2 optical switch; 14 GHz; 5 GHz; 8 GHz; HF; LiNbO/sub 3/; high-frequency optical clock regenerator; hold-in ranges; input clock frequency; low-pass filter; phase comparator; phase-locked loop-type clock regenerator; photodetectors; pull-in; Band pass filters; Clocks; Frequency; High speed optical techniques; Low pass filters; Optical filters; Optical switches; Phase locked loops; Repeaters; Voltage-controlled oscillators;
Journal_Title :
Photonics Technology Letters, IEEE
