Title :
60 GHz millimeter-wave generation and transport using stabilized mode-locked laser diode with optical frequency DEMUX switch
Author :
Kitayama, Ken-ichi ; Kuri, Toshiaki ; Yokoyama, Hiroyuki ; Okuno, Masayuki
Author_Institution :
Commun. Res. Lab., Minist. of Posts & Telecommun., Tokyo, Japan
Abstract :
A novel optical generation and transport technique of optical frequency division multiplexing (OFDM) mm-wave signals is proposed. A number of mm-wave signals can be simultaneously generated by using a coherent multi-frequency light source and transported over an optical fiber network. The OFDM signals are demultiplexed and distributed to individual microcell zones. Each pair of lightwaves is converted into a mm-wave at the base station by optical self-heterodyning. The key device to the coherent multi-frequency light source is a stabilized mode-locked laser diode (MLLD) combined with a special class of optical frequency demultiplexing (DEMUX) switch. 60 GHz mm-wave generation and the transport over a 40 km-long optical fiber is successfully demonstrated. The 3 dB linewidth of the generated mm-wave as narrow as 0.3 kHz shows an excellent frequency stability of the light source
Keywords :
cellular radio; demultiplexing equipment; frequency division multiplexing; laser frequency stability; laser mode locking; optical communication equipment; optical fibre communication; optical modulation; optical switches; semiconductor lasers; 3 dB linewidth; 40 km; 60 GHz; DEMUX switch; OFDM signals; coherent multi-frequency light source; frequency stability; microcell zones; millimeter-wave generation; millimeter-wave transport; mm-wave signals; optical fiber network; optical frequency demultiplexing switch; optical frequency division multiplexing; optical self-heterodyning; stabilized mode-locked laser diode; Base stations; Diode lasers; Frequency division multiplexing; Light sources; Microcell networks; Millimeter wave technology; OFDM; Optical devices; Optical fiber networks; Signal generators;
Conference_Titel :
Global Telecommunications Conference, 1996. GLOBECOM '96. 'Communications: The Key to Global Prosperity
Conference_Location :
London
Print_ISBN :
0-7803-3336-5
DOI :
10.1109/GLOCOM.1996.592016
