Modelling of Mach Zehnder modulators for millimeter-wave radio-over-fiber systems | |
| Author | Trinh Dinh Minh Hung |
| Call Number | AIT RSPR no. TC-03-21 |
| Subject(s) | Millimeter wave communication systems Modulators (Electronics) Radio -- Transmitters and transmission |
| Note | A research study submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Advanced Technologies |
| Publisher | Asian Institute of Technology |
| Series Statement | Research studies project report ; no. TC-03-21 |
| Abstract | Next generation of wireless system will operate at the millimeter-wave frequencies. This range of frequencies has attractive characteristics for providing broadband access for multimedia applications. Optical fiber is considered as ideal medium for transmission of millimeter-wave signal from central station to number of base stations. In order to transmit the millimeter-wave through optical fiber, the millimeterwave signal must be used to modulate the optical signal through optical modulators. There are many ways to generate millimeter-wave optical signal such as direct modulation, Electro-Absorption modulation, Mach-Zehnder modulator. However, MachZehnder modulator is often chosen because its significant advantages, for example its chirp parameter can be null or controllable. Because of the important roles of the Mach-Zehnder modulator in millimeterwave radio-over-fiber systems and the advantages of its characteristics compared with the other modulator methods, Mach-Zehnder modulator have been studied in this work. Its operations have been analyzed and modeled for modulation of millimeter-wave radioover- fiber systems. In millimeter-wave optical system, optical single side band (OSSB) is usually preferred to use than optical double sideband (ODSB) because OSSB can reduce the bandwidth of the signal, increase the spectrum efficiency and reduce the damage of chromatic dispersion. In this work, dual drive Mach Zehnder modulators have been studied to configuration for generating OSSB signal. Dual drive MZ modulators have also been modeled for digital intensity modulation in this work. Analysis of the modulation result has been carried out. The modulation results match well with the modulation theory. The models resulted from this work can be used to simulate to make experiments about next generation of mobile systems using millimeter-wave radio-over-fiber. These modulation results of the models can be used as a part of the optical system to simulate the whole experiment systems. |
| Year | 2003 |
| Corresponding Series Added Entry | Asian Institute of Technology. Research studies project report ; no. TC-03-21 |
| Type | Research Study Project Report (RSPR) |
| School | School of Advanced Technologies (SAT) |
| Department | Department of Information and Communications Technologies (DICT) |
| Academic Program/FoS | Telecommunications (TC) |
| Chairperson(s) | Sharma, A.B.; |
| Examination Committee(s) | Ahmed, Kazi M. ;Erke, Tapio; |
| Scholarship Donor(s) | Ho Chi Minh City Post and Telecommunications.; |
| Degree | Research Studies Project Report (M. Eng.) - Asian Institute of Technology, 2003 |