Title :
Development of a lumped constant type optical modulator in the microwave band for digital terrestrial TV broadcasting
Author :
Haeiwa, K. ; Toba, Y.
Author_Institution :
Hiroshima City Univ., Hiroshima
Abstract :
This article describes development and construction of an evolutional lumped constant type LiNbO3 optical modulator that operates via a faint signal in the microwave frequencies for TV program transmission of terrestrial digital TV broadcasting with a bandwidth of 6-9 MHz. This modulator modulates a light beam at 1.5 mum with OFDM (orthogonal frequency division multiplex) signals at a 6-7 GHz band and a voltage level of 60 dBmuV from a receiving antenna. Performance was satisfactory.
Keywords :
OFDM modulation; digital television; optical modulation; receiving antennas; television antennas; television broadcasting; LiNbO3; OFDM; digital terrestrial TV broadcasting; frequency 6 GHz to 7 GHz; frequency 6 MHz to 9 MHz; lumped constant type optical modulator; microwave band; orthogonal frequency division multiplexing; receiving antenna; size 1.5 mum; Electrodes; Optical fibers; Optical modulation; Radio frequency; TV;
Conference_Titel :
Communications, Circuits and Systems, 2007. ICCCAS 2007. International Conference on
Conference_Location :
Kokura
Print_ISBN :
978-1-4244-1473-4
DOI :
10.1109/ICCCAS.2007.6251619
