JPS55111182A - Distortion compensatory circuit - Google Patents

Distortion compensatory circuit

Info

Publication number
JPS55111182A
JPS55111182A JP1786679A JP1786679A JPS55111182A JP S55111182 A JPS55111182 A JP S55111182A JP 1786679 A JP1786679 A JP 1786679A JP 1786679 A JP1786679 A JP 1786679A JP S55111182 A JPS55111182 A JP S55111182A
Authority
JP
Japan
Prior art keywords
diode
linearity
light
resistor
emitting diode
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
JP1786679A
Other languages
Japanese (ja)
Inventor
Yoshio Ogushi
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP1786679A priority Critical patent/JPS55111182A/en
Publication of JPS55111182A publication Critical patent/JPS55111182A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/10—Controlling the intensity of the light
    • H05B45/14—Controlling the intensity of the light using electrical feedback from LEDs or from LED modules
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]

Landscapes

  • Led Devices (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To easily compensate non-linearity due to a light-emitting diode and non- linearity in a phase characteristic, by connecting a capacitive circuit in parallel with the diode of a non-linear circuit comprising the diode and a resistor. CONSTITUTION:A capacitive circuit (capacitor) 9 is coupled in parallel with the diode 6 of a non-linear circuit, which comprises the diode 6 and a resistor 7 and acts to compensate the non-linearity of a light-emitting diode 4. The gain produced by the light-emitting diode 4 varies by R3/(R2+R3) and a phase varies by tan<-1>omegaCR<2> due to the different operation point of the diode 6, where R2 denotes the resistance a of resistor 10b, R3 denotes the resistance of another resistor 7 and C denotes the capacitance of the capacitor 9. The non-linearity of the gain and phase of the light-emitting diode 4 can be compensated by adjusting the resistances R2, R3 and the capacitance C. Thus, the quality of a transmitted signal can be improved.
JP1786679A 1979-02-20 1979-02-20 Distortion compensatory circuit Pending JPS55111182A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1786679A JPS55111182A (en) 1979-02-20 1979-02-20 Distortion compensatory circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1786679A JPS55111182A (en) 1979-02-20 1979-02-20 Distortion compensatory circuit

Publications (1)

Publication Number Publication Date
JPS55111182A true JPS55111182A (en) 1980-08-27

Family

ID=11955576

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1786679A Pending JPS55111182A (en) 1979-02-20 1979-02-20 Distortion compensatory circuit

Country Status (1)

Country Link
JP (1) JPS55111182A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5850836A (en) * 1981-09-22 1983-03-25 Sony Corp Driving circuit for light emitting element
EP0600553A1 (en) * 1992-12-04 1994-06-08 Koninklijke Philips Electronics N.V. Optical transmission system comprising a linearisation circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5850836A (en) * 1981-09-22 1983-03-25 Sony Corp Driving circuit for light emitting element
JPH031854B2 (en) * 1981-09-22 1991-01-11 Sony Corp
EP0600553A1 (en) * 1992-12-04 1994-06-08 Koninklijke Philips Electronics N.V. Optical transmission system comprising a linearisation circuit

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