重要伝統的建造物群保存地区における歴史的建造物の利活用手法に関する研究 : 奈良県橿原市今井町を事例として

関西学院大

A tunable polarization-independent comb filter based on high-order mode fiber

National Natural Science Foundation of China [61077031]This paper presents an all-fiber tunable comb filter based on high-order mode fiber (HOMF). The filter is constructed by splicing a segment of HOMF between two sections of conventional single-mode fibers (SMFs), with an intentionally introduced offset at the first joint between the SMF and HOMF, and without an offset at the second joint between the HOMF and SMF, to optimize the visibility of the transmission spectrum. The optimal transverse offset of the fibers at the first joint and the tunable polarization-independent properties of the filter were studied theoretically and experimentally. An example of using this tunable comb filter in the application of a sensor, based on demodulating the wavelength shift of a fiber Bragg grating, has also been demonstrated. The particular advantages of this all-fiber tunable filter make it valuable in various applications

FPGA オ リヨウシタ ガゾウ ショリ ボード ノ カイハツ

FPGA (Field Programmable Gate Array) is a kind of logic IC, and users can reconfigure its internal circuit. We developed an image processing board by using FPGA. Image data is processed by hardware logic circuits in FPGA, and the circuits are reconfigureble for various image processing algorithms. This paper describes the hardware structure of the board and an application for real time image reversing

Silver catalyzed decarboxylative direct C2-alkylation of benzothiazoles with carboxylic acids

NSFC [21072178]; Innovation Specialist Projects of Henan Province; Innovation Scientists, Technicians Troop Construction Projects of ZhengzhouA novel and efficient silver catalyzed decarboxylative direct C2-alkylation of benzothiazoles with carboxylic acids for the synthesis of 2-alkyl benzothiazoles was developed