Title :
Optical RF-TV signal sensing and transmission for terrestrial TV relaying stations
Author :
Haeiwa, Kazuhisa ; Yamashita, Takayuki ; Takeuchi, Yasuhiro ; Toba, Yoshikazu ; Torihata, Shigenori ; Onizawa, Masatoshi
Author_Institution :
NHK Eng. Adm. Dept., Tokyo, Japan
Abstract :
An evolutional optical RF-TV signal sensing and transmitting facilities were constructed and employed for a new type of TV relaying station. A LiNbO/sub 3/ optical modulator of Mach-Zehnder type at 1.3 /spl mu/m, which was used to modulate a light beam at 1.3 /spl mu/m with digital terrestrial television (OFDM) signals at a 470 MHz through 770 MHz band with a power level of 36 dB /spl mu/V obtained from a UHF-TV receiving antenna in the receiving facilities, was newly used to send these RF-TV signals to the transmitting facilities located up to 6 km apart from the receiving point. The system operation was satisfactory.
Keywords :
digital television; optical communication; optical waveguides; television broadcasting; television receivers; television transmitters; 1.3 micron; 470 to 770 MHz; 6 km; LiNbO/sub 3/; LiNbO/sub 3/ Mach-Zehnder optical modulator; UHF-TV receiving antenna; light beam modulation; optical RF-TV signal sensing; optical RF-TV signal transmission; receiving facilities; terrestrial TV relaying stations; transmitting facilities; Lightning; Optical modulation; Optical refraction; Optical sensors; Optical variables control; Optical waveguides; Power transmission lines; Radio frequency; Relays; TV;
Conference_Titel :
Industry Applications Conference, 2002. 37th IAS Annual Meeting. Conference Record of the
Conference_Location :
Pittsburgh, PA, USA
Print_ISBN :
0-7803-7420-7
DOI :
10.1109/IAS.2002.1044103
