Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.
This paper reports the development of the Mach Zehnder Interferometer (MZI) optical modulator utilizing different tapered structures of the multimode interference (MMI) employing the Silicon-On-Insulator (SOI) technology. There are two parts involved in developing the MZI modulators which are the electrical and optical part. The P-I-P-I-N structure was used in the electrical part of the device. Meanwhile, in the optical part, the MMI couplers design structure was applied. There are three MMI structures being utilized in the optical section which are the non-tapered, linear tapered and the parabolic tapered MMI structure. All three designs were set to the same design parameters. The effect of using the different MMI design structure were analyzed in term s of its extinction ratio (ER), ins ertion los s (IL) and the modulation efficiency (VπLπ). The parabolic tapered structure is recorded to have the highest ER, which is 33.33 dB and lowest IL 4.592 dB compared to the other design structure. For the modulation efficiency, all three designs demonstrated almost the same values which are within the range of 0.0565 V.cm to 0.0572 V.cm. The device modeling shows that the parabolic tapered structure gives the best performance. This is probably due to the tilting design which allows better propagation of optical signal towards the end of the device structure..
MZI, MMI coupler, Tapered structure, SOI, PIPIN.
A. R. HANIM, N. S. M. ZAMIL, H. HAZURA, A. S. M. ZAIN, F. SALEHUDDIN, S. K. IDRIS, The performance analysis of different tapered structures of MMI couplers for MZI modulators on Silicon-On- Insulator (SOI), Optoelectronics and Advanced Materials - Rapid Communications, 12, 5-6, May-June 2018, pp.253-257 (2018).
Submitted at: Sept. 27, 2017
Accepted at: June 7, 2018