Title :
Integrated coherent transceivers for broad-band access networks
Author :
Shih, M.H. ; Wang, L.M. ; Choa, F.S. ; Tanbun-Ek, T. ; Wisk, P. ; Tsang, W.T. ; Burrus, C.A.
Author_Institution :
Dept. of Comput. Sci., Maryland Univ., Baltimore, MD, USA
Abstract :
We proposed and demonstrated an integrated device with a simple structure that can perform both transmitting and receiving functions with very high receiving sensitivity. The device is composed of a tunable distributed-Bragg-reflector (DBR) laser as a local oscillator (LO) and an integrated detector. An FSK receiver sensitivity of -43.4 dBm at 108 Mb/s was obtained. Multichannel operating characteristics were studied and it was found that systems with an operation channel spacing of 3 GHz can be realized. This device can be operated with either half-duplex or full-duplex mode for broad-band access applications.
Keywords :
broadband networks; distributed Bragg reflector lasers; electro-optical modulation; frequency shift keying; optical fibre subscriber loops; optical receivers; optical transmitters; photodetectors; semiconductor lasers; sensitivity; transceivers; tuning; 108 Mbit/s; DBR laser; FSK receiver sensitivity; broad-band access applications; broad-band access networks; full-duplex mode; half-duplex; integrated coherent transceivers; integrated detector; integrated device; local oscillator; multichannel operating characteristics; operation channel spacing; receiving functions; simple structure; transmitting functions; tunable distributed-Bragg-reflector laser; very high receiving sensitivity; Distributed Bragg reflectors; Laser modes; Optical fiber communication; Optical mixing; Optical receivers; Optical sensors; Semiconductor lasers; Space technology; Transceivers; Tunable circuits and devices;
Journal_Title :
Photonics Technology Letters, IEEE
