Publication: On the performance of Mach-Zehnder-Interferometer (MZI) optical modulator on silicon-on-insulator (SOI)
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Date
2015
Journal Title
Journal ISSN
Volume Title
Publisher
Institute of Electrical and Electronics Engineers Inc.
Abstract
In recent years, there has been a significant interest in the development of optical waveguide modulators using Silicon-On-Insulator (SOI) substrates motivated by the potential to provide a reliable low-cost alternative to other photonic materials. Objective: In this paper, Multimode Interference (MMI) device is used to develop the MZI structure of the optical modulator. Meanwhile, the electrical part of the modulator utilizes the forward biased P-I-N structure. The effect of varying MMI width to the performance of the MZI optical modulator on SOI was investigated. The effect of varying MMI width to the insertion loss (IL), extinction ratio (ER) and modulation efficiency (V?L) of the device were carried out. Results: The investigated MMI widths are 22, 30 and 38 ?m. Smallest MMI width, which is 22 ?m has recorded the lowest value of insertion loss with 3.30 dB and the best extinction ratio of 25.60 dB. However, the best modulation efficiency was observed for the MMI width of 38 ?m with 0.1696 V.cm. Conclusion: Appropriate selection of MMI width is vital to ensure optimum performance of the MZI modulator. � 2015 IEEE.
Description
Keywords
MMI's width, MZI, optical modulator, SOI, Efficiency, Insertion losses, Interferometers, Light extinction, Modulation, Modulators, Nanoelectronics, Silicon on insulator technology, Machzehnder interferometers (MZI), MMI's width, Modulation efficiency, Multimode interference devices, Optical waveguide modulators, Optimum performance, Silicon-on- insulators (SOI), Silicon-on-insulator substrates, Light modulators