Title :
Subnanosecond wavelength-tunable heterodyne receiver and analysis of its fundamental switching speed
Author :
Hu, Peigang ; Su, Yikai ; Hu, Weisheng ; Leng, Lufeng ; Tian, Xiangqing ; He, Hao ; Dong, Yi
Author_Institution :
State Key Lab. of Adv. Opt. Commun. Syst. & Networks, Shanghai Jiao Tong Univ., China
Abstract :
We experimentally demonstrate subnanosecond tunability of a heterodyne receiver employing a fast-switching local laser oscillator. A <0.7-ns switching time and the feasibility to achieve hitless switching are demonstrated. Theoretical analysis of the transition process indicates that switching time shorter than a single bit slot can be realized in a typical receiver configuration with a fast-switching local oscillator.
Keywords :
heterodyne detection; high-speed optical techniques; optical fibre communication; optical receivers; optical switches; optical tuning; heterodyne receiver; local laser oscillator; subnanosecond tunability; switching time; Communication switching; Helium; Laser tuning; Local oscillators; Optical filters; Optical mixing; Optical receivers; Optical transmitters; Tunable circuits and devices; Ultrafast optics; Optical communication; optical receivers; optoelectronic devices; tunable receiver;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2005.861959
