Bhatt, K. Durga Prasad (2017) Modelling and Analysis of Wave Mixing Characteristics in Semiconductor Optical Amplifier for High-speed Communication Systems. [USQ Project]
Abstract
This research demonstrates about non-linear pulse propagation and four wave mixing (FWM) characteristics in semiconductor optical amplifier (SOAs). For modelling and simulation of pulse propagation and wave mixing characteristics in SOAs a modified nonlinear Schrödinger equation (MNLSE) is used. In the MNLSE, the gain of carrier dynamics and all non-linear effects of the SOAs are included for simulation by finite-difference beam propagation method (FDBPM) and obtained the pulse propagation and wave mixing characteristics in SOAs. In the propagated pulses pulse width or full width at half maximum (FWHM) increases linearly with input pulse width or FWHM. When input pulse energy increases then output pulse energy increases which is due to the amplification or gain of the SOA. It has observed that the propagated pulses peak position is shifted to the leading edge and there are some dips occurred in the output pulses which is due to gain saturation and self-phase modulation (SPM) effect.
In this research, FD-BPM is used to solve the MNLSE with different input pulse shapes and obtained the pulse propagation and wave mixing characteristics in the SOAs. The pulse propagation and FWM characteristics with different input pulse shapes and different input energy levels in SOAs. From simulation, the output waveforms and spectra are obtained. The output pulse shapes are dependent on variation of different input energy levels as well as input pulse shape, input pulse width and input pulse energy levels. The peak position of output waveforms are shifted towards the leading edge of the SOA.
This simulation results confirmed that the output propagated pulse shapes are depending on the input pulse shapes and this results is useful for high speed communication systems or links for transmission networks. This thesis documented in detail the input pulse shape depended non-linear pulse propagation and wave mixing characteristics in SOAs. These results are useful for the next generation’s high speed communication systems.
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| Item Type: | USQ Project |
|---|---|
| Item Status: | Live Archive |
| Additional Information: | Current UniSQ staff and students can request access to this thesis. Please email research.repository@unisq.edu.au with a subject line of SEAR thesis request and provide: Name of the thesis requested and Your name and UniSQ email address |
| Faculty/School / Institute/Centre: | Current - Faculty of Health, Engineering and Sciences - No Department (1 Jul 2013 -) |
| Supervisors: | Das, Narottam |
| Qualification: | Master of Engineering Science (Electrical and Electronic Engineering) |
| Date Deposited: | 16 Jun 2026 05:03 |
| Last Modified: | 16 Jun 2026 05:03 |
| URI: | https://sear.unisq.edu.au/id/eprint/53201 |
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