Title :
Reconfigurable Linear Optical FM Discriminator
Author :
Rasras, Mahmoud S. ; Chen, Young-kai ; Tu, Kun-Yii ; Earnshaw, Mark P. ; Pardo, Flavio ; Cappuzzo, Mark A. ; Chen, Evans Y. ; Gomez, Louis T. ; Klemens, Fred ; Keller, Bob ; Bolle, Cristian ; Buhl, Larry ; Wyrwas, John M. ; Wu, Ming C. ; Peach, Robert ; M
Author_Institution :
Bell Labs., Alcatel-Lucent, Murray Hill, NJ, USA
Abstract :
We present a reconfigurable optical discriminator filter for frequency modulated microwave-photonics link applications. The filter is based on a simplified ring-assisted Mach-Zehnder interferometer configuration. It enables conversion of a highly linear frequency to amplitude modulation. Operations in a fixed bandwidth (BW) of 30 GHz and a tunable bandwidth from 10 to 30 GHz are achieved using third- and fifth-order filters. A balanced frequency discrimination architecture with electronically reconfigurable transfer characteristics is demonstrated. We measured a output-third order intercept point (OIP3) linearity improvement over that of a dual-output Mach-Zehnder.
Keywords :
Mach-Zehnder interferometers; discriminators; frequency modulation; microwave photonics; optical communication equipment; optical filters; optical modulation; bandwidth 10 GHz to 30 GHz; electronically reconfigurable transfer characteristics; frequency discrimination architecture; frequency modulated microwave photonics link application; reconfigurable linear optical FM discriminator; reconfigurable optical discriminator filter; ring assisted Mach-Zehnder interferometer configuration; Frequency modulation; Microwave filters; Optical distortion; Optical fiber filters; Optical fibers; Bandpass filter; high-index-contrast waveguide; microwave photonics; optical communications; routing;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2012.2217483
