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심형관 청주대학교 산업과학연구소 2004 産業科學硏究 Vol.21 No.2
In this paper we discuss a particular topology of a fiber optic pressure transducer. The sensor was designed to operate using typical telecommunications components at 1300nm wavelength. The sensing effect IS based on induced birefringence modulation occurring in highly birefringent (HB) optical fibers under the influence of hydrostatic pressure. The presented transducer was developed in a temperature self-compensating optical configuration not requiring any additional electronic network compensation against the temperature artifact.
광섬유 통신의 WDM의 Hybrid를 위한 부호기 및 복호기의 개발에 관한 기초연구
심형관 청주대학교 산업과학연구소 2002 産業科學硏究 Vol.19 No.2
In this paper, connecting the Optical CDMA decoder and encoder to the WDMA sending link and using WDM and Optical CDMA hybrid system to limit the transmission capacity, we can externly type the sending size of the transmission capacity in Optical Communication ilies. For the last the limited code length and the preson that would use by analying it could rise the number of use.
백색광을 이용한 광섬유 간섭계 신호의 주파수 영역에서의 처리에 관한연구
심형관 청주대학교 2014 産業科學硏究 Vol.31 No.2
The investigation of White-Light interferometry Error due to the differenc between Envelope Peak and Fringe Peak has been performed. We suggest a Compensation method that estimates the variation of phase change with the spectral distribution of the light source through FFT operation of the interferogram of the surface, and then compensates the measurement errors by calculating formula derived. in this paper.
Split-step angular spectrum 방법을 이용한 광전자시스템 성능분석
심형관 청주대학교 산업과학연구소 2002 産業科學硏究 Vol.19 No.2
The Passive components for opto-electric experiements are lenses, mirrors, gratings, prisms, polarigons and ets. In this study, Mathamatical method of each components have been established and, using split-step angular spectrum method achichis numerical analysis based on physical structure. Comparing the resulted of numerical to theoretical analysis, and Modifing the a accuray of our models.
심형관 청주대학교 산업과학연구소 2008 産業科學硏究 Vol.25 No.2
Introducing high sensitive optical fiber temperature sensors which were developed recently. It would recommend for contact measuring method under 200 with the resolution of 0.5 and for noncontact measuring method in the range from 200 to 400 with resolution of 2% of full scale.
심형관 청주대학교 2016 産業科學硏究 Vol.33 No.2
Wireless power transmission (WPT) is a technology using free space as a conductor for transmitting electric power, which aims to transfer not just the transmission signal but also the electrical energy itself. This paper take issue with the fundamental wireless power transmission technology, such as Induction Coupling, Resonance Coupling, and Radio/Microwave Radiation.
Fiber-Optic CDMA 시스템에서의 1차원과 2차원 광 직교 코드의 비교 분석
심형관,김명래 청주대학교 산업과학연구소 2000 産業科學硏究 Vol.18 No.1
A new family of two-dimensional (2-D) optical codes for Optical Code Division Multiple Access(OCDMA) networks has been proposed. 2-D optical codes has shown improved performance compared to the previously proposed 1-D optical code(OOC). we compare the performance of 2-D code to OOC for a given probability of error(BER). also, the autocorrelation and correlation properties of two codes.
백색광을 이용한 광섬유 간섭계 신호의 위상 영역에서의 처리에 관한연구
심형관 청주대학교 2014 産業科學硏究 Vol.31 No.2
White light interferometry has gotten a firm position in 3D surface profile measuring field. In this paper we discussed the method of data treatment for the phase variaton due to mutual frequencies interferenc in white-light, and we also introduce a equation of white-light interference fringe pertinent to the polarization of souce.
심형관 청주대학교 2018 産業科學硏究 Vol.35 No.2
The fundamental wireless power transmission technologies are Induction Coupling, Resonance Coupling, and Radio/Microwave Radiation. Among those most favorable technology is the Resonance Coupling method. In this paper we dealing with last two technologies for th future. And also survey the technologies trends of the wireless power transmission.