The Potential of Silicon Photonic Devices based on Micro-Ring Resonator

Silicon photonic is the theory and application of photonic systems that utilize silicon as an optical medium. The fabrication compatibility with current CMOS processes offer vast development and future improvement of optical devices. By using silicon micro-ring resonator, the requirement of high speed on-chip interconnections can be achieved. This paper gives an overview of the recent research on the potential of silicon photonics based on micro-ring resonato

Response Surface Approach to Optical Channel Dropping Filter Design Parameters Optimization

The objective of this paper is to optimise the design parameters for the optical channel dropping filter, which is based on the microring resonator topology. The most important parameters to determine the performance of the microring channel optical filter are the waveguide width, gap, core thickness and ring radius. The determination of parameters by classical experimental design methods requires a large amount of experimental data, which has been found to be costly and time-consuming. To overcome this drawback, a design of experiment (DOE) methods of the Response Surface Methodology (RSM) was employed. This paper employed the RSM design analysis in evaluating the performance of the microring resonator with different design parameters settings. Upon completion, the RSM shows that the optimum condition can be achieved when the ring radius is 5.50μm, a gap of 200nm, waveguide width of 418 nm and core thickness of 220 nm. In conclusion, for optimized performance of the channel dropping filter, design conditions within the range demonstrated in this study are suggested

The Impact of Gate-Induced Drain Leakage (GIDL) on Scaled MOSFETs for Low Power Device

In this research, we investigated the impact of Gate-Induced Drain Leakage (GIDL) on scaled Metal-OxideSemiconductor Field-Effect Transistor (MOSFET) for low power application. The output of this research determined the implications of GIDL on the performance of MOSFET with various sizes that are supplied via low voltage power. The MOSFET design parameters were proposed by referring to the International Technology Roadmap for Semiconductors (ITRS), 2011 edition. SILVACO’s DEVEDIT and ATLAS software was used for this research to design a device structure and obtain output characteristics. Three MOSFETs with different physical gate length and several other parameters were designed and simulated. From the extracted data, it shows that as the size of MOSFET physical gate length become smaller, the leakage current tends to be higher. Apart from GIDL current (IGIDL) value, the “ON” current (ION) value and threshold voltage (VTH) value also been extracted for all MOSFET designs

Design and characterization of multiple coupled microring based wavelegnth demultiplexer in silicon-on-insulator (SOI)

We report in this paper, an optimized design and characterization of SOI based single mode, four channels wavelength demultiplexer using microrings. The usage of siliconon- insulator (SOI) allows a wide free spectral range (FSR) for the device that is crucial in developing ultra-compact integrations of planar lightwave circuits (PLCs). The characterizations are done using Finite-Difference Time-Domain (FDTD) mode simulations from RSOFT. Serially cascaded microring arrays up to the third order are presented to study the design trade-off among the FSR, Q-factor and optical losses of the laterally coupled wavelength demultiplexer. The demultiplexer is expected to be working at C-band region of Wavelength Division Multilplexing (WDM) for a wavelength around 1550 nm. Our proposed demultiplexer has low insertion loss (< 0.5 dB) and a crosstalk around 12 ∼ 19 dB

Performance of Different Mach-Zehnder Interferometer (MZI) Structures for Optical Modulator

An optical modulator is a device that electrically controls the output phase and the output amplitude of the optical signal. This paper analyzes the performance of different structures of the MZI as an optical modulator. This project compares the performance of Y-coupler and MMI coupler as Mach-Zehnder Interferometer (MZI) modulator on the SiliconOn-Insulator (SOI). This project used OptiBPM software and OptiSys for designing the structures and performance analysis. The performance has been analyzed based on the insertion loss, extinction ratio, phase shift and modulation efficiency. MMIcoupler design shows better performance with reduced insertion loss and better modulation efficiency of 2.53% and 17% respectively than that of the Y-coupler. Furthermore, the extinction ratio and phase shift of MMI coupler show an increment about 8.35% and 7.96% respectively when analyzed as the optical modulator. Therefore, the MMI coupler as MZI modulator exhibits better performance than the Y-coupler

The Potential of Silicon Photonic Device Based on Tapered MMI Structure

Tapered multimode interference (MMI) structure has recently been utilized on multiple fabrications of the silicon photonics device. This type of structure has the potential for the production of small device for various applications. Various designs have been made in order to produce a compact design of MMI. This paper will discuss recent research on the different tapered MMI structure and its performances when simulating different structures (linear, parabolic, exponential and etc.). The use of tapered structure device allows wider waveguides separation, as compared to a straight MMI device