Title :
A novel transmitter architecture for combined baseband data and subcarrier-multiplexed control links using differential Mach-Zehnder external modulators
Author :
Gaudino, R. ; Blumenthal, D.J.
Author_Institution :
Dipt. di Elettronica, Politecnico di Torino, Italy
Abstract :
We propose, analyze, and demonstrate a novel transmitter architecture for links that support transmission of base-band data and subcarrier multiplexed control channels. The architecture utilizes a differential external integrated-optic modulator to electrooptically combine the base-band and subcarrier multiplexed data onto an optical carrier. An analytical model is presented that allows optimization of the SNR of the received base-band and control data channels based on modulation parameters. This optimization is based on tradeoffs that result when the base-band and subcarrier channel are combined using a nonlinear modulator transfer function. We experimentally demonstrate a link based on this architecture with 2.5-Gb/s base-band and 100-Mb/s control data multiplexed on a 5.5-GHz subcarrier. Analytical and measured experimental results are compared and are shown to be in good agreement.
Keywords :
electro-optical modulation; integrated optics; nonlinear optics; optical fibre communication; optical noise; optical transfer function; optical transmitters; optimisation; subcarrier multiplexing; 100 Mbit/s; 2.5 Gbit/s; SNR; analytical model; baseband data control links; differential Mach-Zehnder external modulators; differential external integrated-optic modulator; electrooptically; modulation parameters; nonlinear modulator transfer function; optical carrier; optimization; subcarrier-multiplexed control links; tradeoffs; transmitter architecture; Arm; Baseband; Nonlinear optics; Optical fiber communication; Optical filters; Optical modulation; Optical transmitters; Transfer functions; Voltage; WDM networks;
Journal_Title :
Photonics Technology Letters, IEEE
