Performance Of Different Mach-Zehnder Interferometer (MZI) Structures For Optical Modulator

Sulaiman, Nur Hidayah (2016) Performance Of Different Mach-Zehnder Interferometer (MZI) Structures For Optical Modulator. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Mach-Zehnder Interferometer (MZI) is an optical modulator device that electrically control the output phase and the output amplitude of the optical signal that passes through the device. Geometrical structure of the MZI modulator will produce different effect on the optical modulator performance. This project analyzed two different types of MZI structures which use the Y-structure and the MMI-structure.Phase modulator is the active region of the MZI modulator in which the optical signal that passes through it will be shifted. The phase modulator arm is the P-I-N structures based on silicon material by Silicon-On Insulator (SOI) technology. This project is conducted in 2-Dimensions of OptiBPM and OptiSys software. The operating wavelength is 1.55μm and 3.45 as the refractive index. From the simulation that had been conducted MMI-structure shows the best performance as the MZI optical modulator. The performance is based on several parameters which are the insertion loss, extinction ratio, phase shift and modulation efficiency with the results of 5.81dB, 30.54, 2.26 μm and 45.03V.cm

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