JPS6435526A - Optical modulator - Google Patents

Optical modulator

Info

Publication number
JPS6435526A
JPS6435526A JP19208587A JP19208587A JPS6435526A JP S6435526 A JPS6435526 A JP S6435526A JP 19208587 A JP19208587 A JP 19208587A JP 19208587 A JP19208587 A JP 19208587A JP S6435526 A JPS6435526 A JP S6435526A
Authority
JP
Japan
Prior art keywords
modulation
frequency component
filter
driving circuit
mainly
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
JP19208587A
Other languages
Japanese (ja)
Inventor
Toru Ozeki
Hiroshi Kinoshita
Shoji Kondo
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.)
Konica Minolta Inc
Original Assignee
Konica Minolta Inc
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 Konica Minolta Inc filed Critical Konica Minolta Inc
Priority to JP19208587A priority Critical patent/JPS6435526A/en
Publication of JPS6435526A publication Critical patent/JPS6435526A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To execute a modulation of a wide band by a low driving voltage, by inputting mainly a low frequency component of an input signal for modulation to a first driving circuit through a first filter, and inputting mainly a high frequency component to a second driving circuit through a second filter. CONSTITUTION:As for the first and second filters 2a, 2b, the rough characteristics are a filter of a filter of a low-pass type and a filter of a high- pass type, respectively, and a low frequency component of an input signal for modulation is inputted to the first driving circuit 3a, and a high frequency component is inputted to the second driving circuit 3b. Also, by the first and second driving circuits 3a, 3b, first and second optical modulation elements 4a, 4b are driven, respectively. That is, the modulation related to the low frequency component mainly of the input signal for modulation is executed by the optical modulation element 4a, and the modulation related to the high frequency component mainly is executed by the optical modulation element 4b, therefore, the optical modulation elements 4a, 4b are driven, while sharing complementarily. In such a way, the modulation of a wide band can be executed, and a driving voltage becomes small.
JP19208587A 1987-07-31 1987-07-31 Optical modulator Pending JPS6435526A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19208587A JPS6435526A (en) 1987-07-31 1987-07-31 Optical modulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19208587A JPS6435526A (en) 1987-07-31 1987-07-31 Optical modulator

Publications (1)

Publication Number Publication Date
JPS6435526A true JPS6435526A (en) 1989-02-06

Family

ID=16285396

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19208587A Pending JPS6435526A (en) 1987-07-31 1987-07-31 Optical modulator

Country Status (1)

Country Link
JP (1) JPS6435526A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0758398A (en) * 1993-08-13 1995-03-03 Nec Corp Laser equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0758398A (en) * 1993-08-13 1995-03-03 Nec Corp Laser equipment

Similar Documents

Publication Publication Date Title
EP0352747A3 (en) Frequency separation stabilization method for optical heterodyne or optical homodyne communication
ATE210312T1 (en) ARRANGEMENT FOR SUMING THE PRODUCTS OF TWO SAME OR DIFFERENT SIGNALS
JPS6435526A (en) Optical modulator
ATE107100T1 (en) PROGRAMMABLE FREQUENCY DIVIDER TO CREATE A LOW FREQUENCY SIGNAL FROM A HIGH FREQUENCY SIGNAL.
GB1534319A (en) Electrical filter networks
SE9102605L (en) OSCILLATOR CONSTRUCTED AROUND ECL LINER RECEIVER
JPS55147060A (en) Fsk and psk modulating circuit
JPS55625A (en) Amplitude modulator
BG39300A3 (en) Frequency synthesizer for generating of control and carrying frequencies
JPS55149517A (en) Amplitude variable filter
SU1376233A1 (en) D-class power amplifier
SU1109883A1 (en) Crystal filter
JPS5586215A (en) Doubling circuit
JPS5792902A (en) Fm modulator
SU1555689A1 (en) Apparatus for filtering symmetric components of electric quantities
SU1061290A1 (en) Device for filtering television signals
SU1149382A1 (en) Amplifying device
JPS56161735A (en) Signal transmission circuit
SU1109957A1 (en) Device for forming colour-difference signals in secam system
SU1141557A1 (en) Phase modulator
SU792556A1 (en) Active filter
JPS5531360A (en) Demodulator circuit
SU1513616A1 (en) Demodulator of phase-modulated signals for transmitting low
JPS5635511A (en) Modulating system for multiphase pulse duration
SU1166268A1 (en) Generator of phase-modulated signals