JP2017009626A - 光信号生成装置 - Google Patents
光信号生成装置 Download PDFInfo
- Publication number
- JP2017009626A JP2017009626A JP2015121413A JP2015121413A JP2017009626A JP 2017009626 A JP2017009626 A JP 2017009626A JP 2015121413 A JP2015121413 A JP 2015121413A JP 2015121413 A JP2015121413 A JP 2015121413A JP 2017009626 A JP2017009626 A JP 2017009626A
- Authority
- JP
- Japan
- Prior art keywords
- modulator
- optical
- optical signal
- modulators
- electroabsorption
- 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
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 173
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 title claims description 24
- 239000004065 semiconductor Substances 0.000 claims abstract description 35
- 230000031700 light absorption Effects 0.000 claims description 4
- 230000008033 biological extinction Effects 0.000 abstract description 16
- 238000010521 absorption reaction Methods 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 description 36
- GPXJNWSHGFTCBW-UHFFFAOYSA-N Indium phosphide Chemical compound [In]#P GPXJNWSHGFTCBW-UHFFFAOYSA-N 0.000 description 21
- 239000000758 substrate Substances 0.000 description 16
- 238000010586 diagram Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 9
- 239000003990 capacitor Substances 0.000 description 7
- 230000005684 electric field Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Images
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
- G02F1/015—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 semiconductor elements having potential barriers, e.g. having a PN or PIN junction
- G02F1/017—Structures with periodic or quasi periodic potential variation, e.g. superlattices, quantum wells
- G02F1/01708—Structures with periodic or quasi periodic potential variation, e.g. superlattices, quantum wells in an optical wavequide structure
-
- 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
- G02F1/0121—Operation of devices; Circuit arrangements, not otherwise provided for in this subclass
-
- 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
- G02F1/015—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 semiconductor elements having potential barriers, e.g. having a PN or PIN junction
- G02F1/025—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 semiconductor elements having potential barriers, e.g. having a PN or PIN junction in an optical waveguide structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/02—Structural details or components not essential to laser action
- H01S5/026—Monolithically integrated components, e.g. waveguides, monitoring photo-detectors, drivers
- H01S5/0265—Intensity modulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/10—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region
- H01S5/12—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region the resonator having a periodic structure, e.g. in distributed feedback [DFB] lasers
-
- 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
- G02F1/015—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 semiconductor elements having potential barriers, e.g. having a PN or PIN junction
- G02F1/0155—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 semiconductor elements having potential barriers, e.g. having a PN or PIN junction modulating the optical absorption
- G02F1/0157—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 semiconductor elements having potential barriers, e.g. having a PN or PIN junction modulating the optical absorption using electro-absorption effects, e.g. Franz-Keldysh [FK] effect or quantum confined stark effect [QCSE]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/4805—Shape
- H01L2224/4809—Loop shape
- H01L2224/48091—Arched
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/02—Structural details or components not essential to laser action
- H01S5/022—Mountings; Housings
- H01S5/023—Mount members, e.g. sub-mount members
- H01S5/02325—Mechanically integrated components on mount members or optical micro-benches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/02—Structural details or components not essential to laser action
- H01S5/022—Mountings; Housings
- H01S5/0233—Mounting configuration of laser chips
- H01S5/02345—Wire-bonding
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
【解決手段】変調器集積型半導体レーザ素子2は光信号路に直列に配置され印加電圧に応じて光を吸収する複数のEA変調器を有する。EA変調器へ印加電圧を供給する変調器ドライバ56は複数のEA変調器ごとに設けられる。複数の変調器ドライバ56は制御信号に応じて複数のEA変調器に対し共通の印加電圧を生成する。複数のEA変調器の変調器長は光源寄りのEA変調器ほど短く設定される。
【選択図】図3
Description
本実施形態に係る光信号生成装置は、半導体レーザの前方にEA変調器をモノリシックに集積した変調器集積型半導体レーザ素子2を備えた光送信モジュールである。当該素子は半導体レーザが出力する光信号の強度を、変調部にて変調信号に基づき変調し被変調光信号を生成する。変調部は光信号の経路に直列に接続された複数のEA変調器を備える。
本発明の第2の実施形態に係る光信号生成装置である光送信モジュールについて、上記第1の実施形態と共通の構成要素には同一の符号を付して基本的に説明を省略し、以下、第1の実施形態との相違点を中心に説明する。
本発明の第3の実施形態に係る光信号生成装置である光送信モジュールについて、上記第1及び第2の実施形態と共通の構成要素には同一の符号を付して基本的に説明を省略し、以下、上記実施形態との相違点を中心に説明する。
本発明の第4の実施形態に係る光信号生成装置である光送信モジュールについて、上記各実施形態と共通の構成要素には同一の符号を付して基本的に説明を省略し、以下、上記実施形態との相違点を中心に説明する。
本発明の第5の実施形態に係る光信号生成装置である光送信モジュールについて、上記各実施形態と共通の構成要素には同一の符号を付して基本的に説明を省略し、以下、上記実施形態との相違点を中心に説明する。
Claims (7)
- 変調部により光源からの入力光信号の強度を変調信号に基づき変調して被変調光信号を生成する光信号生成装置であって、
前記変調部は、
光信号路に直列に配置され印加電圧に応じて光を吸収する複数の電界吸収型光変調器と、
前記複数の電界吸収型光変調器ごとに設けられ、当該電界吸収型光変調器へ前記印加電圧を供給する回路であって、制御信号に応じて前記複数の電界吸収型光変調器に対し共通の前記印加電圧を生成する複数の駆動回路と、
を有し、
前記複数の電界吸収型光変調器の変調器長は前記光源寄りの前記電界吸収型光変調器ほど短く設定されていること、
を特徴とする光信号生成装置。 - 請求項1に記載の光信号生成装置において、
前記複数の電界吸収型光変調器の変調器長は、前記各電界吸収型光変調器における光吸収量が同じになるように設定されていること、
を特徴とする光信号生成装置。 - 請求項1又は請求項2に記載の光信号生成装置において、
前記電界吸収型光変調器が形成された光半導体素子はその表面に、当該電界吸収型光変調器の正極及び負極のうち少なくとも一方の極性について前記印加電圧を供給する配線を接続するための電極パッドを有し、
前記光信号路にて隣り合う2つの前記電界吸収型光変調器における同一極性の前記電極パッドは、前記光信号路に対して互いに反対側に配置されること、
を特徴とする光信号生成装置。 - 請求項1又は請求項2に記載の光信号生成装置において、
前記電界吸収型光変調器が形成された光半導体素子はその表面に、当該電界吸収型光変調器の正極及び負極について前記印加電圧を供給する配線を接続するための電極パッドを有し、
前記各電界吸収型光変調器の前記正極及び前記負極の前記電極パッドに関する前記光信号路の方向における並び順は、前記光信号路にて隣り合う2つの前記電界吸収型光変調器で逆であること、
を特徴とする光信号生成装置。 - 変調部により光源からの入力光信号の強度を変調信号に基づき変調して被変調光信号を生成する光信号生成装置であって、
前記変調部は、
光信号路に直列に配置され印加電圧に応じて光を吸収する複数の電界吸収型光変調器と、
前記変調信号に応じた電圧を出力する駆動回路と、
を有し、
前記複数の電界吸収型光変調器は、前記駆動回路に対して互いに電気的に直列に接続されること、
を特徴とする光信号生成装置。 - 請求項5に記載の光信号生成装置において、
前記複数の電界吸収型光変調器それぞれに並列に電気抵抗が接続されていること、を特徴とする光信号生成装置。 - 請求項5に記載の光信号生成装置において、
直列接続された前記複数の電界吸収型光変調器と並列に前記駆動回路に電気抵抗が接続されていること、を特徴とする光信号生成装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015121413A JP2017009626A (ja) | 2015-06-16 | 2015-06-16 | 光信号生成装置 |
US15/173,761 US9726914B2 (en) | 2015-06-16 | 2016-06-06 | Optical signal generator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015121413A JP2017009626A (ja) | 2015-06-16 | 2015-06-16 | 光信号生成装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2017009626A true JP2017009626A (ja) | 2017-01-12 |
Family
ID=57587859
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2015121413A Pending JP2017009626A (ja) | 2015-06-16 | 2015-06-16 | 光信号生成装置 |
Country Status (2)
Country | Link |
---|---|
US (1) | US9726914B2 (ja) |
JP (1) | JP2017009626A (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019029649A (ja) * | 2017-08-02 | 2019-02-21 | 日本オクラロ株式会社 | 半導体発光装置 |
JP7433545B1 (ja) | 2023-03-13 | 2024-02-19 | 三菱電機株式会社 | レーザ光出射装置及び光モジュール |
JP7511061B2 (ja) | 2017-12-18 | 2024-07-04 | 日本ルメンタム株式会社 | 光送信サブアセンブリ |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10054806B2 (en) * | 2016-11-08 | 2018-08-21 | Xilinx, Inc. | Segmented electro-absorption modulation |
US10547158B1 (en) * | 2018-10-31 | 2020-01-28 | Avago Technologies International Sales Pte. Limited | Optical communication device and system |
JP2021180296A (ja) * | 2020-05-15 | 2021-11-18 | 住友電気工業株式会社 | 光半導体装置、光送信モジュール及び光トランシーバ |
US11838055B2 (en) * | 2021-01-22 | 2023-12-05 | Nokia Solutions And Networks Oy | Apparatus comprising serially connected electro-absorption modulators |
US20230006414A1 (en) * | 2021-06-30 | 2023-01-05 | Lumentum Japan, Inc. | Electro-absorption modulator |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05289033A (ja) * | 1992-04-07 | 1993-11-05 | Hitachi Ltd | 直列導波路型光送受信装置 |
JP2001221985A (ja) * | 2000-02-09 | 2001-08-17 | Opnext Japan Inc | 半導体電界吸収光変調器集積型発光素子、発光素子モジュール、及び光伝送システム |
JP2003005141A (ja) * | 2001-06-21 | 2003-01-08 | Mitsubishi Electric Corp | 光変調器、光変調器の実装基板および光変調器の駆動方法 |
JP2003098492A (ja) * | 2001-09-26 | 2003-04-03 | Oki Electric Ind Co Ltd | 半導体光変調器及び光変調器集積型半導体レーザ |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05257102A (ja) | 1992-03-16 | 1993-10-08 | Nippon Telegr & Teleph Corp <Ntt> | 光位相変調回路 |
US6678479B1 (en) | 2000-03-01 | 2004-01-13 | Opnext Japan, Inc. | Semiconductor electro-absorption optical modulator integrated light emission element light emission element module and optical transmission system |
FR2824152B1 (fr) * | 2001-04-27 | 2004-01-30 | Cit Alcatel | Emetteur optique comprenant un modulateur compose d'une pluralite d'elements de modulation |
JP4421951B2 (ja) | 2004-06-11 | 2010-02-24 | 日本オプネクスト株式会社 | 光送信モジュール |
EP2174185B1 (en) * | 2007-06-13 | 2015-04-22 | Ramot at Tel-Aviv University Ltd. | System and method for converting digital data into an analogue intensity-modulated optical signal |
US7899277B2 (en) * | 2008-05-28 | 2011-03-01 | Jds Uniphase Corporation | Integrated on-chip inductors and capacitors for improved performance of an optical modulator |
US9128309B1 (en) * | 2010-09-29 | 2015-09-08 | Lockheed Martin Corporation | Plural EAM device with optimized waveguide profile |
-
2015
- 2015-06-16 JP JP2015121413A patent/JP2017009626A/ja active Pending
-
2016
- 2016-06-06 US US15/173,761 patent/US9726914B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05289033A (ja) * | 1992-04-07 | 1993-11-05 | Hitachi Ltd | 直列導波路型光送受信装置 |
JP2001221985A (ja) * | 2000-02-09 | 2001-08-17 | Opnext Japan Inc | 半導体電界吸収光変調器集積型発光素子、発光素子モジュール、及び光伝送システム |
JP2003005141A (ja) * | 2001-06-21 | 2003-01-08 | Mitsubishi Electric Corp | 光変調器、光変調器の実装基板および光変調器の駆動方法 |
JP2003098492A (ja) * | 2001-09-26 | 2003-04-03 | Oki Electric Ind Co Ltd | 半導体光変調器及び光変調器集積型半導体レーザ |
Non-Patent Citations (1)
Title |
---|
GETTY,J.T. ET AL.: "Novel Segmented Cascade Electroabsorption Modulator with Improved Bandwidth-Extinction Product", OFC 2005,TECHNICAL DIGEST, vol. OWE6, JPN6018037287, 2005, pages 1 - 3, ISSN: 0004009426 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019029649A (ja) * | 2017-08-02 | 2019-02-21 | 日本オクラロ株式会社 | 半導体発光装置 |
JP7511061B2 (ja) | 2017-12-18 | 2024-07-04 | 日本ルメンタム株式会社 | 光送信サブアセンブリ |
JP7433545B1 (ja) | 2023-03-13 | 2024-02-19 | 三菱電機株式会社 | レーザ光出射装置及び光モジュール |
Also Published As
Publication number | Publication date |
---|---|
US20160370609A1 (en) | 2016-12-22 |
US9726914B2 (en) | 2017-08-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP2017009626A (ja) | 光信号生成装置 | |
JP6523060B2 (ja) | 光信号生成装置 | |
US20070248363A1 (en) | Semiconductor element mounting board and optical transmission module | |
US9140955B2 (en) | Electro-optic modulators | |
US20170250521A1 (en) | Optical transmission module | |
US7031558B2 (en) | Low-pass filter transmission line with integral electroabsorption modulator | |
US8724933B2 (en) | Optical device | |
JP2003279908A (ja) | 光送信器 | |
US9838135B1 (en) | Differential electro-absorption modulator (EAM) driver | |
JP6939411B2 (ja) | 半導体光素子 | |
JPH1051069A (ja) | 光半導体装置 | |
CN107834355A (zh) | 光学放大***及其控制方法 | |
JP2003005141A (ja) | 光変調器、光変調器の実装基板および光変調器の駆動方法 | |
JP2005093742A (ja) | 面発光レーザおよびこれを用いたレーザモジュール | |
JPH07231132A (ja) | 半導体光装置 | |
JP2019033116A (ja) | 半導体光集積素子 | |
JP7126314B2 (ja) | 半導体発光装置 | |
JP6037952B2 (ja) | 半導体光集積素子、光送信モジュールおよび光送信集積モジュール | |
US20190044301A1 (en) | Semiconductor light-emitting device | |
JP4901126B2 (ja) | 電界吸収型変調器及びその製作方法 | |
JP6817912B2 (ja) | 半導体光集積素子 | |
WO2013140483A1 (ja) | 光変調器、光変調器モジュール及び光変調器の駆動方法 | |
JPH07231141A (ja) | 半導体光装置 | |
WO2014129005A1 (ja) | ドライバ及び光変調モジュール | |
JP2006287144A (ja) | 光集積デバイス |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20171221 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20180919 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20180925 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20181115 |
|
A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20190402 |