Title :
Polymer-based directional coupler modulator with high linearity
Author :
Hung, Yu-Chueh ; Fetterman, Harold R.
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
Abstract :
A generalized novel two-section directional coupler modulator with a linear transfer function is presented. This scheme introduces different coupling coefficients for each of the sections. We show that this configuration effectively suppresses the third-order intermodulation distortion compared to a conventional Mach-Zehnder modulator. It can be easily implemented by the photobleaching technique in polymer technology and demonstrates a simple and promising design for high-performance analog optical links without a complicated structure or electrical control.
Keywords :
integrated optics; optical directional couplers; optical modulation; optical polymers; optical saturable absorption; optical transfer function; analog optical links; coupling coefficients; directional coupler modulator; linear transfer function; photobleaching; polymer technology; polymer-based modulator; third-order intermodulation distortion; two-section directional coupler; Directional couplers; Linearity; Optical control; Optical distortion; Optical modulation; Optical polymers; Optical signal processing; Photobleaching; Transfer functions; Voltage; Integrated optics; linearized modulators; photobleaching; polymers;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2005.859491
