JPH0415042U - - Google Patents

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Publication number
JPH0415042U
JPH0415042U JP5473390U JP5473390U JPH0415042U JP H0415042 U JPH0415042 U JP H0415042U JP 5473390 U JP5473390 U JP 5473390U JP 5473390 U JP5473390 U JP 5473390U JP H0415042 U JPH0415042 U JP H0415042U
Authority
JP
Japan
Prior art keywords
light
optical
otdr
optical fiber
directional coupler
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP5473390U
Other languages
English (en)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP5473390U priority Critical patent/JPH0415042U/ja
Publication of JPH0415042U publication Critical patent/JPH0415042U/ja
Pending legal-status Critical Current

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Description

【図面の簡単な説明】
第１図はこの考案によるＯＴＤＲの構成図、第
２図は光学フイルタ９の光学特性図、第３図はこ
の考案による実施例の構成図、第４図は従来技術
によるＯＴＤＲの構成図、第５図は第４図で得ら
れる信号波形図、第６図は高速光スイツチを使用
した場合の第４図の増幅回路７の出力波形図、第
７図は後方散乱光のスペクトラム成分を表した図
である。 １……パルス発生器、２……光源駆動回路、３
……光源、４……方向性結合器、５……光フアイ
バ、６……受光素子、７……増幅回路、８……信
号処理回路、９……帯域制限用光学フイルタ、１
０……光切換回路。

Claims (1)

  1. 【実用新案登録請求の範囲】 光源３からの光パルスを方向性結合器４を介し
    て光フアイバ５に入射し、光フアイバ５からの後
    方散乱光またはフレネル反射光を方向性結合器４
    で分離し、受光素子６で光電変換し、信号処理回
    路８で光フアイバ５の状態を検出するＯＴＤＲに
    おいて、 光フアイバ５に入射した光パルスと同じ波長成
    分を取り除く帯域制限用光学フイルタ９を方向性
    結合器４と受光素子６の間に入れることを特徴と
    するＯＴＤＲ。
JP5473390U 1990-05-25 1990-05-25 Pending JPH0415042U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5473390U JPH0415042U (ja) 1990-05-25 1990-05-25

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5473390U JPH0415042U (ja) 1990-05-25 1990-05-25

Publications (1)

Publication Number Publication Date
JPH0415042U true JPH0415042U (ja) 1992-02-06

Family

ID=31577060

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5473390U Pending JPH0415042U (ja) 1990-05-25 1990-05-25

Country Status (1)

Country Link
JP (1) JPH0415042U (ja)

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