プラスティック光ファイパーのインパルス応答波形および周波数伝達関数測定における諸問題

URI http://harp.lib.hiroshima-u.ac.jp/it-hiroshima/metadata/3732
ファイル
タイトル
プラスティック光ファイパーのインパルス応答波形および周波数伝達関数測定における諸問題
別タイトル
Some Problems Encountered in the Measurement of Impulse Response Waveform and Frequency Transfer Function of Plastic Optical Fiber
著者
氏名 橋爪 信郎
ヨミ ハシヅメ ノブオ
別名 Hashizume Nobuo
氏名 齋藤 千晴
ヨミ サイトウ チハル
別名 Satio Chiharu
氏名 清水 貴弘
ヨミ シミズ タカヒロ
別名 Shimizu Takahiro
氏名 橋本 陽介
ヨミ ハシモト ヨウスケ
別名 Hashimoto Yousuke
氏名 前本 浩史
ヨミ マエモト ヒロシ
別名 Maemoto Hiroshi
氏名 仁田 直貴
ヨミ ニイダ ナオキ
別名 Nida Naoki
氏名 西田 晃
ヨミ ニシダ アキラ
別名 Nishida Akira
キーワード
plastic optical fiber
impulse response waveform
frequency
transfer function
far-field pattern
optical oscilloscope
relay lens
NDC
425
抄録

Various attempts to measure precisely impulse response waveforms and frequency transfer functions of a plastic optical fiber (POF) of 1mm in diameter and 0.5 in N.A. are reported in this paper. The waveforms showed a remarkable difference when the POF end surface was placed at the glass window position of the hermetic container of the photodiode (PD) on one hand, and in contact with the semiconductor surface after breaking the glass on the other. An optical oscilloscope (OOS) was tested. Output waveforms measured with the OOS showed insignificant differences from those measured with the PD with the POF end surface placed at the glass window position. The waveforms measured with the PD changed their profiles as the POF length was varied: The peak of the pulse moved from the pulse rear to the front with increasing length. Waveforms theoretically calculated by using measured far-field patterns (FFPs) and non-scattering approximation could clearly explain the features of the measured waveforms. Measurements of frequency transfer functions were carried out by using a newly designed 1:1 relay lens placed in front of the PD. The measured transfer function was characterized by well-known large attenuation at the frequency equal to the reciprocal of the waveform width. The frequency transfer function measured with and without the relay lens especially showed a difference at the frequency mentioned above.

掲載雑誌名
広島工業大学紀要. 研究編
41
開始ページ
1
終了ページ
6
出版年月日
2007
出版者
広島工業大学
ISSN
13469975
NCID
AA11599110
本文言語
日本語
資料タイプ
紀要論文
著者版フラグ
出版社版
旧URI
区分
it-hiroshima