JPH0241127U - - Google Patents

Info

Publication number
JPH0241127U
JPH0241127U JP11935988U JP11935988U JPH0241127U JP H0241127 U JPH0241127 U JP H0241127U JP 11935988 U JP11935988 U JP 11935988U JP 11935988 U JP11935988 U JP 11935988U JP H0241127 U JPH0241127 U JP H0241127U
Authority
JP
Japan
Prior art keywords
optical fiber
pressure sensor
core
plastic
coated
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.)
Granted
Application number
JP11935988U
Other languages
Japanese (ja)
Other versions
JPH0524023Y2 (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 JP1988119359U priority Critical patent/JPH0524023Y2/ja
Publication of JPH0241127U publication Critical patent/JPH0241127U/ja
Application granted granted Critical
Publication of JPH0524023Y2 publication Critical patent/JPH0524023Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Measuring Fluid Pressure (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の光フアイバ型圧力センサの一
実施例である単光路ヘテロダイン式光フアイバ型
マイクロホンシステムの原理図、第２図は本考案
の光フアイバ型圧力センサで使用されるサイドホ
ール型光フアイバの断面図でコア周辺を引出し更
に拡大して示している。第３図は本考案の光フア
イバ型圧力センサをマイクロホンとして利用する
場合の音響周波数に対する最小検出限界音圧を示
すグラフ、第４図は従来の光ヘテロダイン方式の
光フアイバ水中のマイクロホンシステムの原理図
である。 １０……コア、１１……クラツド、１２……サ
イドホール、１３……プラスチツクコーテイング
。 Figure 1 is a principle diagram of a single optical path heterodyne optical fiber microphone system, which is an embodiment of the optical fiber pressure sensor of the present invention, and Figure 2 is a side hole type microphone system used in the optical fiber pressure sensor of the present invention. This is a cross-sectional view of an optical fiber, with the core and its periphery drawn out and further enlarged. Figure 3 is a graph showing the minimum detection limit sound pressure versus acoustic frequency when the optical fiber pressure sensor of the present invention is used as a microphone, and Figure 4 is a diagram of the principle of a conventional optical heterodyne optical fiber underwater microphone system. It is. 10... Core, 11... Cladding, 12... Side hole, 13... Plastic coating.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] コアに沿つてクラツド中にサイドホールが設け
られている偏波面保持光フアイバにプラスチツク
のコーテイングを施して成ることを特徴とする光
フアイバ型圧力センサ。 An optical fiber type pressure sensor comprising a polarization maintaining optical fiber having side holes in the clad along the core and coated with plastic.
JP1988119359U 1988-09-13 1988-09-13 Expired - Lifetime JPH0524023Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1988119359U JPH0524023Y2 (en) 1988-09-13 1988-09-13

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988119359U JPH0524023Y2 (en) 1988-09-13 1988-09-13

Publications (2)

Publication Number Publication Date
JPH0241127U true JPH0241127U (en) 1990-03-22
JPH0524023Y2 JPH0524023Y2 (en) 1993-06-18

Family

ID=31364522

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988119359U Expired - Lifetime JPH0524023Y2 (en) 1988-09-13 1988-09-13

Country Status (1)

Country Link
JP (1) JPH0524023Y2 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6311610U (en) * 1986-07-07 1988-01-26

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6311610U (en) * 1986-07-07 1988-01-26

Also Published As

Publication number Publication date
JPH0524023Y2 (en) 1993-06-18

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