Theoretical and experimental characterization of quadrature optical modulators using opposed-phase signals

Author(s)

Tiago Sutili

• Document type: Master's Dissertation
• Press: Campinas, SP.
• Institution: Universidade Estadual de Campinas (UNICAMP). Faculdade de Engenharia Elétrica e de Computação
• Defense date: 2014-07-18

Examining board members

Evandro Conforti; Adriano Luís Toazza; Antonio Marcelo Oliveira Ribeiro

• Advisor: Evandro Conforti

Abstract

The market¿s increasing demand for high capability optical systems requested advanced modulation techniques considered in practical applications. Among its advantages, a significant improvement in spectral efficiency, immunity against various nonlinear effects and noise sources were obtained with a decrease in the operation frequency of the electronics. With that in mind, we sought to conduct an analysis throughout the key properties of various advanced modulation techniques, based on the manipulation of both the amplitude and the phase of the optical signal, and used together with multiplexing systems for polarization and wavelength. Many laboratory tests were made with the objective of characterizing an IQ Modulator, responsible for generating DQPSK, 16-QAM and 64-QAM signals, as well as many other components required for the implementation of a complete coherent optical communication system. Thus achieving the understanding of the system¿s basic structure, the realization of a more complete and detailed set of tests will be possible (AU)

• FAPESP's process: 12/11423-7 - Optical Coherent System Interchannel Interference
• Grantee: Tiago Sutili
• Support Opportunities: Scholarships in Brazil - Master