Title :
Novel broadband travelling wave light intensity modulator
Author :
Chattopadhyay, T. ; Bhattacharya, M. ; Nakajima, M.
Author_Institution :
Dept. of Phys., Visva-Bharati Univ., Santiniketan, India
fDate :
6/1/1993 12:00:00 AM
Abstract :
The paper analyses the possibility of realising a wideband travelling wave interferometric light intensity modulator (TWILIM) using the conventional simple planar electrode geometry. The proposed modulator with all its three ports matched has an optimum signal feed location which depends upon the microwave optical `walkoff´ factor. The ratio (halfwave voltage/bandwidth), which defines the figure of merit of a modulator, for the proposed modulator, is three to four times that of the conventional end fed TW modulator having identical substrate, electrode length and gap at a given wavelength of operation
Keywords :
electro-optical devices; electrodes; integrated optics; light interferometers; optical modulation; optical waveguide theory; bandwidth; broadband travelling wave light intensity modulator; electrode gap; electrode length; figure of merit; halfwave voltage; interferometric light intensity modulator; matched ports; microwave optical walkoff factor; operating wavelength; optimum signal feed location; simple planar electrode geometry;
Journal_Title :
Optoelectronics, IEE Proceedings J
