JPS5536732A - Method of measuring characteristic of photoelectric conversion signal amplifier - Google Patents

Method of measuring characteristic of photoelectric conversion signal amplifier

Info

Publication number
JPS5536732A
JPS5536732A JP10935278A JP10935278A JPS5536732A JP S5536732 A JPS5536732 A JP S5536732A JP 10935278 A JP10935278 A JP 10935278A JP 10935278 A JP10935278 A JP 10935278A JP S5536732 A JPS5536732 A JP S5536732A
Authority
JP
Japan
Prior art keywords
amplifier
photoelectric conversion
conversion signal
signal amplifier
apd8
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
JP10935278A
Other languages
Japanese (ja)
Inventor
Takashi Toge
Akira Miyauchi
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP10935278A priority Critical patent/JPS5536732A/en
Publication of JPS5536732A publication Critical patent/JPS5536732A/en
Pending legal-status Critical Current

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  • Testing Electric Properties And Detecting Electric Faults (AREA)

Abstract

PURPOSE: To economically and lightly measure the amplifying characteristics of a photoelectric conversion signal amplifier by enabling measurement of the characteristics of the amplifier by utilizing the nose generated from a photodetector.
CONSTITUTION: The operating current of a semiconductor laser 4 is supplied from a DC power supply 12. The light from the laser 4 is incident to a photodetector such as, for example APD8 mounted at the input terminal of a measurement amplifier 6. Since the intensity of the incident light is constant, a direct current is flown through the APD8. This current contains diffused noise. This noise is amplified by the amplifier 6 to present at the output side. When the amplified output is measured by the ordinal provess in spectrum, this spectrum represents the frequency characteristics of the amplifier 6.
COPYRIGHT: (C)1980,JPO&Japio
JP10935278A 1978-09-06 1978-09-06 Method of measuring characteristic of photoelectric conversion signal amplifier Pending JPS5536732A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10935278A JPS5536732A (en) 1978-09-06 1978-09-06 Method of measuring characteristic of photoelectric conversion signal amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10935278A JPS5536732A (en) 1978-09-06 1978-09-06 Method of measuring characteristic of photoelectric conversion signal amplifier

Publications (1)

Publication Number Publication Date
JPS5536732A true JPS5536732A (en) 1980-03-14

Family

ID=14508038

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10935278A Pending JPS5536732A (en) 1978-09-06 1978-09-06 Method of measuring characteristic of photoelectric conversion signal amplifier

Country Status (1)

Country Link
JP (1) JPS5536732A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6245734A (en) * 1985-08-26 1987-02-27 株式会社クラレ Special blended fiber yarn

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6245734A (en) * 1985-08-26 1987-02-27 株式会社クラレ Special blended fiber yarn

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