We worked out a band pass filter based on a surface relief grating structure. The cross-section of the grating ridges has a T-shape, realizing high-low-high refractive index contrast like in an interference filter. This monolithic filter exhibits outstanding opto-mechanical qualities, thus it can be efficiently used e.g. in low temperature environment or at high laser intensities. The optimized dimensions of the structure is determined by numerical simulations.
The RCWA (see Section 2.2) and MoL (see Section 2.1) methods were used to calculate the transmittance of the filter. It is shown that the filter has very good transmittance at the center wavelength and suppress other wavelengths in the NIR range (1200 – 1900 nm). The stability of the simulations is checked by monitoring energy conservation. The correctness of the results was assured by applying two independent methods (RCWA and MoL) and comparing the results.
Continue Reading
This paper proposes a distributed peer-to-peer data lookup technique on DHTs in order to serve range queries over multiple attributes. The scheme, MARQUES, uses space filling curves to map multi-attribute…
We consider the connectedness in the game of Go. This game has a graph theoretical structure and the connectedness of the stones is very important to evaluate positions. In this…
In this paper, we study a two-stage capacitated facility location problem with choice of depot size (TSCFLP-CD). Given a set of potential sites for plants in the first echelon, a…
Invention of Complete Complementary Codes (CCC) attracts researchers' attention thanks to their unique ideal correlation properties. Published construction algorithms limit the number of generated codes in signature number, thus in…
Broadband spectrum is observed in 1060nm InGaAs/GaAs thyristor-lasers with two different structures PiNiN and PNiN. In this paper, we experimentally investigate and compare the performance of these two structures. The…
Search with privacy-preserving guarantee has been a critical issue for commercial cloud storage. Data owners outsource a large number of encrypted sensitive data to cloud and allow data users to…
To automate malware analysis, dynamic malware analysis systems have attracted increasing attention from both the industry and research communities. Of the various logs collected by such systems, the API call…
Climate condition affects users' action and tweet content. We discover that temperature and humidity affects users' action more than the general weather category such as sunny or rainy. In detail,…
Research in the field of WSD has been conducted in computational linguistics as a specific task for many years. Language and context features have been shown to be very helpful…