JPS56130619A - Photodetecting device - Google Patents

Photodetecting device

Info

Publication number
JPS56130619A
JPS56130619A JP3519080A JP3519080A JPS56130619A JP S56130619 A JPS56130619 A JP S56130619A JP 3519080 A JP3519080 A JP 3519080A JP 3519080 A JP3519080 A JP 3519080A JP S56130619 A JPS56130619 A JP S56130619A
Authority
JP
Japan
Prior art keywords
light
optical
optical fiber
polarizer
oscillation
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
JP3519080A
Other languages
Japanese (ja)
Inventor
Kazuo Hisama
Shuichi Tai
Toshio Aranishi
Koichi Hamanaka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP3519080A priority Critical patent/JPS56130619A/en
Publication of JPS56130619A publication Critical patent/JPS56130619A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J4/00—Measuring polarisation of light
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
    • G01R15/24—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-modulating devices

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Measuring Fluid Pressure (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)

Abstract

PURPOSE:To obtain an optical CT, an optical PT, and so on stable against disturbance such as oscillation, by splitting the light from the optical fiber into two by the beam splitter and by causing one divided light to pass through the polarizer and using it as the signal light and by using the other as the monitor light and by comparing and measuring them. CONSTITUTION:The light from light source 1 through optical fiber 2 and polarizer 3 is split into two by beam splitter 8, and one split light passes through electrooptical element 4, 1/4 wave-length plate 5, photodetector 6, and optical fiber 2 and is converted to an electric signal by light receiver 7. The other which passed through optical fiber 2 and attenuator 9 is converted to a monitor signal by light receiver 7, and the ratio of both signals is obtained by operator 10. Thus, even if the optical fiber and so on are affected by pressure and oscillation, the stable output which is not affected them is obtained. Consequently, this device is applied to the optical PT, the optical CT, and so on to improve their performance.
JP3519080A 1980-03-19 1980-03-19 Photodetecting device Pending JPS56130619A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3519080A JPS56130619A (en) 1980-03-19 1980-03-19 Photodetecting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3519080A JPS56130619A (en) 1980-03-19 1980-03-19 Photodetecting device

Publications (1)

Publication Number Publication Date
JPS56130619A true JPS56130619A (en) 1981-10-13

Family

ID=12434926

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3519080A Pending JPS56130619A (en) 1980-03-19 1980-03-19 Photodetecting device

Country Status (1)

Country Link
JP (1) JPS56130619A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6088332A (en) * 1983-10-19 1985-05-18 Tokyo Electric Power Co Inc:The Sensor apparatus using light
JPS622128A (en) * 1985-06-27 1987-01-08 Toa Medical Electronics Co Ltd Fluorescent polarization measuring apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6088332A (en) * 1983-10-19 1985-05-18 Tokyo Electric Power Co Inc:The Sensor apparatus using light
JPS622128A (en) * 1985-06-27 1987-01-08 Toa Medical Electronics Co Ltd Fluorescent polarization measuring apparatus

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