Frontiers of Optoelectronics
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An analog notch filter for piezoelectric optical scanner
Frontiers of Optoelectronics - Tập 3 - Trang 370-375 - 2010
The optical scanner is one of the most important components in free-space optical communications, airborne and space-based lidars, adaptive optics, and so on. The performance of an optical scanner is frequently limited by the presence of mechanical resonances. This paper presents an analog notch filter with adjustable function to reject the mechanical resonances of the optical scanner. First of al......
Analysis of mode-field half widths of two kinds of single-mode waveguides
Frontiers of Optoelectronics - Tập 2 - Trang 35-39 - 2009
The mode-field half widths of two kinds of single-mode waveguides are investigated. Based on the maximal matching efficiency method, the relationship between the mode-field half width and normalized frequency is analyzed. Furthermore, two equations of mode-field half widths as a function of normalized frequency are proposed through mathematical modeling and the curve fitting method. Numerical calc......
Microring resonator for glucose sensing applications
Frontiers of Optoelectronics - Tập 2 - Trang 304-307 - 2009
Silicon nitride microring resonators were demonstrated as chemical sensors. The microring devices, with diameter of 100 μm, were fabricated using complementary metal oxide semiconductor (CMOS)-compatible technology, and a high Q factor of 15000 was realized with free spectrum range (FSR) of 2 nm. The structures were further packaged to perform as chemical sensors, and their functionality was prove......
Slow light in silicon microring resonators
Frontiers of Optoelectronics - Tập 4 - Trang 282-287 - 2011
This paper experimentally investigated slow light effect in cascaded silicon-on-insulator (SOI) microring resonators. Double channel and single channel side-coupled integrated spaced sequence of resonators (SCISSOR) devices were fabricated with electron beam lithography and dry etching technology. The delay performances of the SCISSOR devices were demonstrated using non-return-to-zero (NRZ) and re......
Optical synthetic aperture circle-array optimization based on genetic algorithm
Frontiers of Optoelectronics - Tập 1 - Trang 268-273 - 2009
An optimization model of circle array was set up from the basic optical synthetic aperture imaging principle. The circle array was optimized by adopting a genetic algorithm with an improved real coding method coding the location of sub-apertures. The measure function was designed based on maximizing the distances between u-v coverage dots and minimizing the redundant array. The point spread functi......
Nearly zero-dispersion, low confinement loss, and small effective mode area index-guiding PCF at 1.55 μm wavelength
Frontiers of Optoelectronics - Tập 4 - Trang 420-425 - 2012
In this paper, a new simple structure of index-guiding photonic crystal fiber (PCF) is designed and presented. In this PCF, dispersion, confinement loss, and effective mode area characteristics are investigated in the second communication window (1.55 μm). Since 1.55 μm wavelength is widely used in optical communication systems, we try to optimize the PCF characteristics in this wavelength by desi......
On-chip silicon light source: from photonics to plasmonics
Frontiers of Optoelectronics - Tập 5 - Trang 3-6 - 2011
Practical silicon photonic interconnects become possible nowadays after the realization of the practical silicon light sources, where the hybrid integrations of III–V semiconductors and silicon by bonding play a fundamental role. Photonic interconnects dissipate substantially less power and offer a significantly greater information bandwidth than those of electronic interconnects; however, one eme......
A simple infrared nanosensor array based on carbon nanoparticles
Frontiers of Optoelectronics - Tập 5 - Trang 266-270 - 2012
A simple (2×2) pixelated flexible infrared nanosensor array based on carbon nanoparticles (CNPs) was fabricated through a simple and low-cost flame method. By integrated with a micro controller unit, the sensor array could detect power density of incident infrared light in real-time. The mechanism for the superior infrared sensing property of the flexible sensor array based on CNP was also studied......
Optimization for data de-duplication algorithm based on file content
Frontiers of Optoelectronics - Tập 3 - Trang 308-316 - 2010
Content defined chunking (CDC) is a prevalent data de-duplication algorithm for removing redundant data segments in archival storage systems. Current researches on CDC do not consider the unique content characteristic of different file types, and they determine chunk boundaries in a random way and apply a single strategy for all file types. It has been proven that such method cannot achieve optima......
Progress of photonic crystal fibers and their applications
Frontiers of Optoelectronics - Tập 2 - Trang 50-57 - 2009
In this article, the fabrication technologies of photonic crystal fibers (PCFs) and their applications at home and abroad were formulated at length, especially in fields such as large mode-area active PCFs, fiber lasers, birefringence fibers, sensors, high nonlinear PCFs, frequency transformation, dispersion compensation PCFs, wideband communication for optical network systems, and photonic band-g......
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