Highly linear electrooptic modulator with suppression of even-order distortions

• Published in: 2009 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) pp. 192 - 196
• Main Authors: Fegadolli, William Santos, de Souza Martins, Carla, Coutinho, Olympio Lucchini, Almeida, Vilson Rosa, Oliveira, Jose Edimar Barbosa
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01.11.2009
• Subjects: directional coupler; Directional couplers; Dynamic range; Electooptic modulators; Electrooptic modulators; linearity; Mach-Zehnder; Nonlinear distortion; Optical distortion; Optical fiber communication; Optical interferometry; Optical modulation; Phase modulation; spurious free dynamic range; Transfer functions; Y-junction
• DOI: 10.1109/IMOC.2009.5427601
• ISBN: 1424453569; 9781424453566
• ISSN: 1679-4389

The distortion introduced by a Y-junction directional coupler modulator (Y-DCM) on an analog optical link is analyzed and compared to that of a Mach-Zehnder (MZM) and of a directional coupler (DCM) modulators. The results reveal that a specific configuration of the Y-DCM allows to bring together advantages of suppressing even-order distortions, similar to that of a MZM, and of enabling high spurious free dynamic range, around 126 dB.Hz 4/5 , similarly to that of a DCM.