JPS554018A - Light modulator - Google Patents

Light modulator

Info

Publication number
JPS554018A
JPS554018A JP7602678A JP7602678A JPS554018A JP S554018 A JPS554018 A JP S554018A JP 7602678 A JP7602678 A JP 7602678A JP 7602678 A JP7602678 A JP 7602678A JP S554018 A JPS554018 A JP S554018A
Authority
JP
Japan
Prior art keywords
crystal
change
temperature
incident wavelength
modulation efficiency
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
JP7602678A
Other languages
Japanese (ja)
Other versions
JPS6150288B2 (en
Inventor
Mitsukazu 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.)
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 JP7602678A priority Critical patent/JPS554018A/en
Publication of JPS554018A publication Critical patent/JPS554018A/en
Priority to US06/261,081 priority patent/US4387343A/en
Publication of JPS6150288B2 publication Critical patent/JPS6150288B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To achieve the stabilization of modulation efficiency with respect to the change in temperature and incident wavelength by subsequently changing the magnitude of applied electric field along the light transmission direction with a part of light modulating media.
CONSTITUTION: 2N pieces of electrodes A1, A2,..., AN and B1, B2,..., BN shown by diagonal lines are installed on a crystal 11, and +V1, +V2,..., +VN and -V1, -V2,..., -VN are applied to the respective electrodes. In addition, a uniform electrode is installed over the entire part on the back side of the crystal and is grounded. At the same time, its electrode period is continuously changed in the Y direction. Further the magnitudes of the applied voltages are so selected as to satisfy the relations of Vj=V0(j=K, K+1,...,N-1), V1<...<VK=V0,V0= VN-1> VN-1+1> VN-1>VN, so that the applied voltages gradually increase on both end portions of the crystal as they go toward the ends of the crystal. Thereby, the fluctuations in the modulation efficiency with prespect to the change in temperature and incident wavelength may be reduced and these kept stable.
COPYRIGHT: (C)1980,JPO&Japio
JP7602678A 1978-06-22 1978-06-22 Light modulator Granted JPS554018A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP7602678A JPS554018A (en) 1978-06-22 1978-06-22 Light modulator
US06/261,081 US4387343A (en) 1978-06-22 1981-05-06 Electrooptic light modulator including weighted interdigital electrodes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7602678A JPS554018A (en) 1978-06-22 1978-06-22 Light modulator

Publications (2)

Publication Number Publication Date
JPS554018A true JPS554018A (en) 1980-01-12
JPS6150288B2 JPS6150288B2 (en) 1986-11-04

Family

ID=13593303

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7602678A Granted JPS554018A (en) 1978-06-22 1978-06-22 Light modulator

Country Status (1)

Country Link
JP (1) JPS554018A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5732734U (en) * 1980-07-29 1982-02-20
US4387343A (en) * 1978-06-22 1983-06-07 Nippon Electric Co., Ltd. Electrooptic light modulator including weighted interdigital electrodes
JPS62113154U (en) * 1986-01-08 1987-07-18

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4387343A (en) * 1978-06-22 1983-06-07 Nippon Electric Co., Ltd. Electrooptic light modulator including weighted interdigital electrodes
JPS5732734U (en) * 1980-07-29 1982-02-20
JPS62113154U (en) * 1986-01-08 1987-07-18

Also Published As

Publication number Publication date
JPS6150288B2 (en) 1986-11-04

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