Title :
Shaping the digital switch
Author_Institution :
US Naval Res. Lab., Washington, DC, USA
Abstract :
A procedure is given for shaping 1*2 digital switches on x- or y-cut LiNbO/sub 3//LiTaO/sub 3/ for prescribed values of crosstalk in order to reduce the voltage-length product. The method is based on a normal mode analysis using ordinary coupled mode theory parameters and a known solution for shaped branches. A factor of three improvement in voltage-length product is obtained, compared to linear branches.<>
Keywords :
crosstalk; electro-optical devices; integrated optics; lithium compounds; optical switches; optical waveguide theory; LiNbO/sub 3/; LiTaO/sub 3/; crosstalk; digital switch shaping; electro-optical devices; normal mode analysis; optical switches; ordinary coupled mode theory; shaped branches; voltage-length product; x-cut; Coupled mode analysis; Crosstalk; Degradation; Directional couplers; Equations; Photonics; Polarization; Shape control; Switches; Voltage control;
Journal_Title :
Photonics Technology Letters, IEEE
