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JPS5852617A - Electrode for optical element - Google Patents

Electrode for optical element

Info

Publication number
JPS5852617A
JPS5852617A JP15072581A JP15072581A JPS5852617A JP S5852617 A JPS5852617 A JP S5852617A JP 15072581 A JP15072581 A JP 15072581A JP 15072581 A JP15072581 A JP 15072581A JP S5852617 A JPS5852617 A JP S5852617A
Authority
JP
Japan
Prior art keywords
electrode
released
optical
polarization
conductive paste
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
JP15072581A
Other languages
Japanese (ja)
Other versions
JPS6247285B2 (en
Inventor
Juichi Noda
野田　壽一
Hiroshi Terui
博 照井
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP15072581A priority Critical patent/JPS5852617A/en
Publication of JPS5852617A publication Critical patent/JPS5852617A/en
Publication of JPS6247285B2 publication Critical patent/JPS6247285B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/03—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect
    • G02F1/05—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect with ferro-electric properties
    • G02F1/0516—Operation of the cell; Circuit arrangements

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Integrated Circuits (AREA)

Abstract

PURPOSE:To obtain an operation of stable optical modulation and optical switching without being applied by bias voltage which is unnecessary for the optical modulation and switching, by arranging so that the charge accumulated in an electrode formed at polarization of a material of a ferrodielectric substance is released at once. CONSTITUTION:An electrode 5 for grounding is connected electrically with a metallic case through the opposite side of the electrode formed at a polarization surface of a material of a ferrodielectric substance 1 and conductive paste 7. The electric charge induced by Joule heat generated at the electrode 5 and an electrode 4 for power supply after a high frequency signal is applied, is released at once through the conductive paste and the case 6 at the electrode 5. While, the charge accumulated at the side of the electrode 4 is also released through terminal resistance 8.

Description

【発明の詳細な説明】 本発明（ま強誘電体材料の分極面暑こブレナ電極まγこ
は櫛形電極を形成し、光変調、光スィッチ等の動作を安
定ｆヒする電極構成ｐこ関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electrode configuration in which a comb-shaped electrode is formed on a polarized surface of a ferroelectric material to stabilize operations such as optical modulation and optical switching. It is something.

従来、強誘電体材料の分極面（こ拡散、エピタキシャル
成長等で光導波路を形成し、：ｙｅ変調器ま１こば光ス
イツチ用として導波路の直上ま１こは近傍（こ、直接ま
１こはバッファ層を介してブレナ電他ま１こけ櫛形電極
を形成していた。通常（ゴ、接地用電極と電極が形成さ
れた強誘電体材料の反対面とは電気的には導通していな
い。Conventionally, an optical waveguide is formed by the polarization plane of a ferroelectric material (diffusion, epitaxial growth, etc.), and the one directly above the waveguide is used for an optical switch. A moss-comb-shaped electrode was formed via a buffer layer.Normally, there is no electrical conduction between the grounding electrode and the opposite side of the ferroelectric material on which the electrode is formed. .

この場合、ブレナ電極才た汀櫛形電極が、３゛０Ωの終
端抵抗と接続され、高周波信号が印加されると、電極（
こはジュール熱がわすか（こ発生し、電極直下の基板の
温度が上昇する。この温度変化によって分極面に（ば焦
電効果による電荷が蓄積する。In this case, a comb-shaped electrode with a Brenna electrode is connected to a terminating resistor of 30Ω, and when a high frequency signal is applied, the electrode (
This generates Joule heat, which increases the temperature of the substrate directly under the electrode. This temperature change causes charges to accumulate on the polarized surface due to the pyroelectric effect.

この蓄積電荷（丁、反対の分極面准電気的ζこ導通され
ｔ゛いかぎり保存される。（ッ１こがってこの蓄積電荷
は電極にバイアス電圧を剛力１１シたこと暑こなり、光
変調器や光スィッチの動イ／目こ極めて悪い影＃をも１
こらず。This accumulated charge (d) is electrically conductive to the opposite polarized plane and is stored for as long as t. The movement of light modulators and light switches/eyes can also cause extremely bad shadows #1
No worries.

本発明（Ｊこの蓄積電荷を解放する１こめ、接地電極と
電極形成面の反対側とを電気的（こ導通させることを目
的としている。The purpose of the present invention is to provide electrical continuity between the ground electrode and the opposite side of the electrode formation surface in order to release this accumulated charge.

図は本発明（こよる電極構成図で、／は強誘電体材料、
−は光導波路、３は分極の方向を示す矢印、グは給電用
電極、夕は接地用電極、乙は金鵬ケース、７は４を性ペ
ースト、どは終端抵抗、りは信号源である。本発明で（
１図（こ示ずよう（こ、接地用電極３−は強誘電体材料
／の分極Ｉｉ１こ形成され１こ電極の反対側と導＊性ペ
ースト７を介して金属ケース（こ電気的に導通されてい
る。高周波信号が印加されて、接地用電極ｊおよび給電
用電極＋ｆこ発生し１こジュール熱（こまって誘起され
１こ電荷（Ｊ１接地用電極よでは導電性ペースト７と金
属ケースｔを介してγこたち（こ解放される。一方、給
電用電極グ側に蓄積され１こ電荷も終端抵抗ざを介して
解放される。The figure shows the configuration of the electrode according to the present invention (/ is a ferroelectric material,
- is an optical waveguide, 3 is an arrow indicating the direction of polarization, G is a power supply electrode, Y is a grounding electrode, O is a metal case, 7 is a paste 4, d is a terminating resistor, and ri is a signal source. In the present invention (
Figure 1 (not shown) The grounding electrode 3- is formed with the polarization Ii1 of the ferroelectric material, and is connected to the opposite side of the electrode through the conductive paste 7 to the metal case (this is electrically conductive). When a high frequency signal is applied, the grounding electrode J and the power feeding electrode On the other hand, the γ charge accumulated on the power supply electrode side is also released via the terminating resistor.

本発明では導電性ペースト７が示されているが、電極形
成の反対面（こ蒸着またはスパッタ（こよって金属膜が
形成されていても同じ効果がある。さら【こ電極形成の
反対面と金属ケースの両者が密着されていてもよい。Although the conductive paste 7 is shown in the present invention, the same effect can be obtained even if a metal film is formed on the opposite side of the electrode formation (by vapor deposition or sputtering). Both cases may be in close contact with each other.

以上説明しｆこように、本発明の光素子用電極（ま、簡
単な電極構造（こよって、強誘電体材料の分極（こ形成
され１こ電極Ｑこ蓄積する電荷か、１こたちＯこ解放さ
れるので、光変調や光スィッチＱこ不敬ナバイアス′醒
圧が印加されることす＜、安定な光変調や光スィッチの
動作が得られる。As explained above, the electrode for optical device of the present invention (well, simple electrode structure), therefore, the polarization of ferroelectric material (this is formed and the charge accumulated in one electrode Since this is released, stable optical modulation and optical switch operation can be obtained, since a bias voltage is not applied to the optical modulation or the optical switch.

【図面の簡単な説明】[Brief explanation of drawings]

図は本発明の電極の構成図である。 ／　強誘電体材料、−光導波路、３　分極を示す方向、
グ　給′亀用電極、ｊ　接地用％Ｌ極、ｔ−金属ケース
、７　導電性ペースト、ざ　終端抵抗　、　　　タ　　
　　イ百　号　諒　。 特許出願人　日本電信電話公社The figure is a configuration diagram of the electrode of the present invention. / Ferroelectric material, - optical waveguide, 3 direction showing polarization,
G Supply electrode, j %L pole for grounding, t-Metal case, 7 Conductive paste, terminating resistor, t
I100 Ryo. Patent applicant Nippon Telegraph and Telephone Corporation

Claims (1)

【特許請求の範囲】[Claims] １　強誘電体材料の分極面にブレナ電極または櫛形電極
を形成した光変調器、光スィッチ等の光素子（こおいて
、プレナ電極または櫛形電極の接地用を極ど、該ブレナ
電極まム＝は櫛形電極か形成され１こ分極面の反対面が
電気的に導通していることを特徴とする光素子用電極。1. Optical elements such as optical modulators and optical switches in which a Brenna electrode or a comb-shaped electrode is formed on the polarization plane of a ferroelectric material (herein, the Brenna electrode or comb-shaped electrode is used for grounding, etc.) An electrode for an optical device, characterized in that a comb-shaped electrode is formed and the surface opposite to the polarized surface is electrically conductive.
JP15072581A 1981-09-25 1981-09-25 Electrode for optical element Granted JPS5852617A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15072581A JPS5852617A (en) 1981-09-25 1981-09-25 Electrode for optical element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15072581A JPS5852617A (en) 1981-09-25 1981-09-25 Electrode for optical element

Publications (2)

Publication Number Publication Date
JPS5852617A true JPS5852617A (en) 1983-03-28
JPS6247285B2 JPS6247285B2 (en) 1987-10-07

Family

ID=15503039

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15072581A Granted JPS5852617A (en) 1981-09-25 1981-09-25 Electrode for optical element

Country Status (1)

Country Link
JP (1) JPS5852617A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0593892A (en) * 1991-10-01 1993-04-16 Nec Corp Two-layered type optical modulator

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54143666A (en) * 1978-04-27 1979-11-09 Serugeebuitsuchi Arekusandoru Polyfilerrtype transducer for changing mechanical movement into electric quantity

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54143666A (en) * 1978-04-27 1979-11-09 Serugeebuitsuchi Arekusandoru Polyfilerrtype transducer for changing mechanical movement into electric quantity

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0593892A (en) * 1991-10-01 1993-04-16 Nec Corp Two-layered type optical modulator

Also Published As

Publication number Publication date
JPS6247285B2 (en) 1987-10-07

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