ミルザ・イムラン・ベイグさん　/　室蘭工業大学 Dr. Mirza Imran Baig　/　Muroran Inatitute of Technology ＜外国人研究者　プロフィール　Profile＞国籍： Nationality：日本留学時の滞在期間： Period of Stay During Studying in Japan：日本留学時の大学： Educational Background In Japan：専攻分野： Major Field：現在の所属/職位： Present Institution/ Status：パキスタン Pakistan 2001年1月1日～2004年4月 Jan 1, 2001 - Apr, 2010 室蘭工業大学工学研究科 Muroran Inatitute of Technology 電気電子工学専攻（博士前期）、創生機能科学専攻（博士後期） Division of Electrical and Erectronic Engineering（MC）、Division of Science for Composite Functions（DC） Associate Professor / Sir Syed University of Engineering and Technology ミルザ・イムラン・ベイグさん Dr. Mirza Imran Baig ＜研究報告　Follow up Research Fellowship＞受入研究者氏名： Research Adviser：受入れ期間： Researching Period：研究課題： Theme of Research：佐藤　信也准教授 Associate Proffessor Shinya Sato ２０１０年９月１日～２０１０年１１月２９日 Sep 1, 2010 - Nov 29, 2010 Distributed measurement of non-linear parameters of dispersion shifted optical fiber ■研究概要 Outline of Research There is now a great need for accurate and convenient measurement of the chromatic dispersion parameter D as a function of distance along a span of dispersion shifted fiber (DSF). A new nondestructive method for measuring the spatial distribution of chromatic dispersion along DSF is proposed. It is based on the analysis of acquired Rayleigh backscattered power distribution of the four-wave mixing generated by two laser sources at the Stokes or the anti-Stokes wavelength. The aim of this research is, therefore, to measure the power distribution of the Strokes or the anti-Strokes wavelength along the fiber. Two strong CW laser signals would be launched at the input end of the fiber through a coupler and AOM. At AOM these signals will be modulated/chopped at the OTDR pulse rate. The signal will then amplify to a power level sufficient for FWM generation and ultimately launched into the fiber. The OTDR will then measure the backscattered power at Stokes or anti-Stokes wavelength after appropriate filtration. After some mathematical analysis, a formulation can be derived to obtained chromatic dispersion distribution from the acquired OTDR data. ■研究成果 Result of Research This research work has been started with an aim to develop an accurate and convenient technique to measure the chromatic dispersion distribution along dispersion shifted fiber (DSF). Efforts have been made to complete the experiment within stipulated time of three months. Since the experimental work for this research is very complex, therefore it requires more time to complete all the aspects of experiment which are required for the mathematical analysis. At this stage, it is premature to obtain the results of this research work. 光電と光ファイバーの接続装置1 Photoelectric equipment 1 ■日本留学の思い出 Memories of Studying in Japan Muroran Institute of Technology. Muroran is like my second home. I am always ready to come here again ever since I had returned back to my home country. It is only because the love, care and affection that the people of Muroran had been given to me and my family. I had studied in many educational institutions in my life but my longest affiliation is with Muroran Institute of Technology. The teachers of Muroran Institute of Technology had also given me love. I found myself very fortunate who had been given opportunity to study at this university. I am very thankful to Monbukagakusho for this. I am also thankful to JASSO for giving me another chance to come here again to continue my research work and do the experiments in my lab where I used to do research work during my student era. 光電と光ファイバーの接続装置2 Photoelectric equipment 2