公开(公告)号：US20150104128A1

公开(公告)日：2015-04-16

申请号：US14509126

申请日：2014-10-08

Applicant: FUJIKURA LTD.

Inventor： Akira OKA ,  Kensuke OGAWA ,  Kazuhiro GOI ,  Hiroyuki KUSAKA

IPC: G02B6/30 ,  G02B6/27 ,  G02F1/225

CPC classification number: G02B6/1228 ,  G02B6/125 ,  G02B6/126 ,  G02B6/14

Abstract: A planar optical waveguide device, includes: two input portions that are waveguides that have the same width, are parallel to each other, and have rectangular cross-sections; a wide portion that is a linear waveguide and is connected after the two input portions; a tapered portion that is connected after the wide portion and that is a multi-mode waveguide which has a tapered shape having a width decreasing gradually and through which at least TE1 propagates; and an output portion that is connected after the tapered portion and that is a multi-mode waveguide which has a rectangular cross-section and through which at least TE1 propagates. The planar optical waveguide device forms a high-order mode conversion combining element that outputs the TE0, which is input to the two input portions, as the TE1 from the output portion.

Abstract translation: 平面光波导装置包括：具有相同宽度的波导的两个输入部分彼此平行并具有矩形横截面; 宽的部分是线性波导并且在两个输入部分之后连接; 连接在宽部分之后的锥形部分，并且是具有逐渐减小并且至少TE1传播的宽度的锥形形状的多模式波导; 以及输出部分，其连接在锥形部分之后，并且是具有矩形横截面且至少TE1传播的多模波导的输出部分。 平面光波导器件形成从输出部分输出到两个输入部分的TE1作为TE1的高阶模式转换组合元件。

公开(公告)号：US20130129293A1

公开(公告)日：2013-05-23

申请号：US13723566

申请日：2012-12-21

Applicant: FUJIKURA LTD.

Inventor： Kensuke OGAWA ,  Ning GUAN ,  Ken SAKUMA

IPC: G02B6/10

CPC classification number: G02B6/10 ,  G02B6/124 ,  G02B6/29325 ,  G02B6/29394

Abstract: There is provided a planar optical waveguide element including a core, the core including first and second portions and a gap portion that is positioned in a center of a width direction of the core between the first and second portions so as to extend in a light waveguide direction. The gap portion has a lower refractive index than that of the first and second portions, and a single mode propagated in the waveguide element has a span crossing the first and second portions.

Abstract translation: 提供了一种包括芯的平面光波导元件，所述芯包括第一和第二部分，以及间隙部分，位于第一和第二部分之间的芯的宽度方向的中心，以便在光波导 方向。 间隙部分具有比第一和第二部分的折射率低的折射率，并且在波导元件中传播的单一模式具有跨越第一和第二部分的跨度。

公开(公告)号：US20170023810A1

公开(公告)日：2017-01-26

申请号：US15284971

申请日：2016-10-04

Applicant: FUJIKURA LTD. ,  AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH

Inventor： Kensuke OGAWA ,  Kazuhiro GOI ,  Guo-Qiang LO ,  Tsung-Yang Jason LIOW ,  Xiaoguang TU

IPC: G02F1/025 ,  G02F1/00

CPC classification number: G02F1/025 ,  G02B2006/12097 ,  G02F1/0018 ,  G02F1/015 ,  G02F2001/0151 ,  G02F2001/212

Abstract: An optical waveguide device includes a substrate; a lower cladding disposed on the substrate; a rib waveguide including a slab disposed on the lower cladding and a single rib disposed on the slab contiguous to the slab; and an upper cladding disposed on the rib waveguide. The rib waveguide includes a first doped region having a first electric conductivity exhibiting a P-type electric conductivity across the rib and the slab and a second doped region being contiguous to the first doped region and having a second electric conductivity exhibiting an N-type electric conductivity across the rib and the slab.

Abstract translation: 光波导器件包括衬底; 设置在所述基板上的下包层; 肋条波导，包括设置在下部包层上的板坯和设置在与板坯相邻的板坯上的单个肋条; 以及设置在肋波导上的上包层。 所述肋波导包括第一掺杂区，所述第一掺杂区具有穿过所述肋和所述板的P型导电性的第一导电性，以及与所述第一掺杂区邻接的第二掺杂区，并且具有表现出N型电 肋和板之间的电导率。

公开(公告)号：US20150293427A1

公开(公告)日：2015-10-15

申请号：US14748895

申请日：2015-06-24

Applicant: FUJIKURA LTD.

Inventor： Kazuhiro GOI ,  Hiroki ISHIHARA ,  Kensuke OGAWA ,  Kenji ODA ,  Hiroyuki KUSAKA ,  Ryokichi MATSUMOTO ,  Hitoshi UEMURA

IPC: G02F1/225 ,  G02B6/122 ,  G02F1/21 ,  G02B6/125

CPC classification number: G02F1/2257 ,  G02B6/122 ,  G02B6/1228 ,  G02B6/125 ,  G02B6/29353 ,  G02B6/29355 ,  G02B2006/12097 ,  G02B2006/12142 ,  G02B2006/12147 ,  G02B2006/12159 ,  G02F1/025 ,  G02F1/218 ,  G02F1/2255 ,  G02F2001/212 ,  G02F2201/58

Abstract: An optical modulation device configured of a planar optical waveguide, includes: a light incidence unit which allows light to be incident on the planar optical waveguide; a Mach-Zehnder interferometer which includes a first optical splitter section branching the light incident on the light incidence unit, two arm portions guiding the light branched by the first optical splitter section, a phase modulation unit linearly disposed on each of the two arm portions, and a first optical coupler section combining the light guided from the two arm portions; a light launching unit which launches the light combined by the first optical coupler section from the planar optical waveguide; and a traveling-wave electrode which includes an input unit and an output unit, and applies a voltage to the phase modulation unit.

Abstract translation: 一种由平面光波导构成的光调制装置，包括：入射单元，其使光入射到所述平面光波导上; 马赫曾德尔干涉仪，其包括分光入射在光入射单元上的光的第一光分路器部分，引导由第一光分路器部分分支的光的两个臂部;线性地设置在两个臂部中的每一个上的相位调制单元， 以及组合从所述两个臂部分引导的光的第一光耦合器部分; 光发射单元，其从平面光波导发射由第一光耦合器部分组合的光; 以及包括输入单元和输出单元的行波电极，并向相位调制单元施加电压。

公开(公告)号：US20140233878A1

公开(公告)日：2014-08-21

申请号：US14260883

申请日：2014-04-24

Applicant: FUJIKURA, LTD.

Inventor： Kazuhiro GOI ,  Kensuke OGAWA

IPC: G02F1/225 ,  G02B6/122

CPC classification number: G02F1/2257 ,  G02B6/122 ,  G02B6/2935 ,  G02B2006/12061 ,  G02B2006/12097 ,  G02B2006/12142 ,  G02B2006/12159 ,  G02F2001/0151 ,  G02F2001/212 ,  G02F2201/063

Abstract: Provided is an optical element including an optical waveguide including a core formed from: a rib part; and a first and second slab parts sandwiching the rib part. The first slab part includes a P-type region, the second slab part includes an N-type region, the rib part includes a P-type region which is in contact with the P-type region provided in the first slab part, and an N-type region which is in contact with the N-type region provided in the second slab part. The rib part includes a top portion which is located above the first and second slab parts and includes an undoped region formed from at least one of an intrinsic region and a low-concentration doping region which is doped at a dopant concentration 1/10 or less of a dopant concentration in at least one of the adjacent P-type region and the adjacent N-type region.

Abstract translation: 本发明提供一种光学元件，其包括：光波导，包括芯，所述芯由以下部分形成：肋部; 以及夹着所述肋部的第一和第二板坯部。 第一板坯部包括P型区域，第二板坯部包括N型区域，肋部包括与设置在第一板坯部中的P型区域接触的P型区域， N型区域与设置在第二板坯部分中的N型区域接触。 肋部分包括位于第一和第二板坯部分上方的顶部部分，并且包括由掺杂浓度为1/10以下的本征区域和低浓度掺杂区域中的至少一个形成的未掺杂区域 在相邻的P型区域和相邻的N型区域中的至少一个中的掺杂剂浓度。

公开(公告)号：US20130183440A1

公开(公告)日：2013-07-18

申请号：US13725166

申请日：2012-12-21

Applicant: FUJIKURA LTD.

Inventor： Ning GUAN ,  Kensuke OGAWA

IPC: B05D5/06

CPC classification number: B05D5/061 ,  G02B6/12007 ,  G02B6/124 ,  G02B6/29394

Abstract: The optical waveguide-type wavelength dispersion compensation device of the present invention has an optical waveguide as a reflection-type wavelength dispersion compensation device. The equivalent refractive index of a core changes unevenly along a light propagation direction by changing physical dimensions of the core that is embedded in. a cladding. The core is designed by (a) setting a first desired reflection spectrum, ignoring transmission losses of the optical waveguide, and designing an optical waveguide that is capable of compensating the wavelength dispersion of an optical fiber to be compensated; (b) deriving a wavelength dependency characteristic of a transmission loss amount of the optical waveguide from an effective length of the optical waveguide designed in process (a); and (c) adding a reverse dependency characteristic of the wavelength dependency characteristic to the first reflection spectrum to correct it to a second reflection spectrum, and redesigning an equivalent refractive index distribution of the optical waveguide designed in the process (a) by using this second reflection spectrum.

Abstract translation: 本发明的光波导型波长色散补偿装置具有作为反射型波长色散补偿装置的光波导。 芯的等效折射率通过改变镶嵌在包层中的芯的物理尺寸沿光传播方向不均匀地变化。 核心是通过（a）设置第一期望的反射光谱，忽略光波导的传输损耗，以及设计能够补偿待补偿的光纤的波长色散的光波导; （b）从工艺（a）中设计的光波导的有效长度导出光波导的传输损耗量的波长依赖特性; 以及（c）将第一反射光谱的波长依赖特性的反向依赖特性加到第二反射光谱上，并且通过使用该第二反射光谱重新设计在（a）中设计的光波导的等效折射率分布 反射光谱。

公开(公告)号：US20130229662A1

公开(公告)日：2013-09-05

申请号：US13864787

申请日：2013-04-17

Applicant: FUJIKURA LTD.

Inventor： Kensuke OGAWA

IPC: G01J3/45

CPC classification number: G01J3/45 ,  G01M11/331 ,  G01M11/335 ,  G01M11/336

Abstract: Provided is a chromatic dispersion measurement device including a light branching unit that divides a incident measured light signal into a first measured light signal and a second measured light signal and causes a frequency difference between the first measured light signal and the second measured light signal when the signals are output, an optical phase shifter provided in either one of the first branch path and the second branch path having a polarization maintaining characteristic and periodically changing a phase αi of the measured light signal, an optical combination unit that combines the first measured light signal and the second measured light signal and outputs an interference element of an i-th optical component obtained by interference of the first measured light signal and the second measured light signal when the phase difference is the phase αi, as a combined measured light signal.

Abstract translation: 提供一种色散测量装置，其包括：光分支单元，其将入射的测量光信号分为第一测量光信号和第二测量光信号，并且当第一测量光信号和第二测量光信号之间的频率差 输出信号，设置在第一分支路径和第二分支路径中的任一个中的具有偏振维持特性并周期性地改变测量光信号的相位的光学移相器，组合第一测量光信号的光学组合单元 和第二测量光信号，并且当相位差为相位α时，输出通过第一测量光信号和第二测量光信号的干扰获得的第i个光学分量的干扰元素作为组合的测量光信号。

公开(公告)号：US20160178841A1

公开(公告)日：2016-06-23

申请号：US14976603

申请日：2015-12-21

Applicant: Fujikura Ltd.

Inventor： Akira OKA ,  Kazuhiro GOI ,  Kensuke OGAWA ,  Hiroyuki KUSAKA

IPC: G02B6/126 ,  G02B6/27 ,  G02B6/122

CPC classification number: G02B6/126 ,  G02B6/105 ,  G02B6/1228 ,  G02B6/2726 ,  G02B6/2766 ,  G02B2006/12038 ,  G02B2006/12061

Abstract: A high-order polarization conversion device configured of a planar optical waveguide, includes: a substrate; a lower clad disposed on the substrate; a core including a lower core and an upper core, the lower core being disposed on the lower clad and having a fixed height in a rectangular sectional shape, the upper core being formed of the same material as the lower core and having a fixed height in a rectangular sectional shape that is disposed continuously on the lower core; and an upper clad that is disposed on the core and the lower clad and is formed of the same material as the lower clad. The high-order polarization conversion device performs high-order polarization conversion between TE1 of the start portion and TM0 of the end portion.

Abstract translation: 由平面光波导构成的高阶偏振光转换装置包括：基板; 设置在所述基板上的下包层; 包括下芯和上芯的芯，下芯设置在下包层上并具有矩形截面形状的固定高度，上芯由与下芯相同的材料形成，并具有固定的高度 连续地设置在下芯上的矩形截面形状; 以及设置在芯和下包层上并由与下包层相同的材料形成的上包层。 高阶偏振变换装置在起始部分的TE1和端部的TM0之间进行高阶极化转换。

公开(公告)号：US20150293384A1

公开(公告)日：2015-10-15

申请号：US14748331

申请日：2015-06-24

Applicant: FUJIKURA LTD.

Inventor： Kensuke OGAWA ,  Kazuhiro GOI ,  Hiroyuki KUSAKA

IPC: G02F1/025 ,  G02B6/122 ,  G02F1/00

CPC classification number: G02F1/025 ,  G02B6/1228 ,  G02B2006/12061 ,  G02B2006/12097 ,  G02B2006/12159 ,  G02F1/015 ,  G02F1/2257 ,  G02F2001/0152 ,  G02F2001/212

Abstract: An optical waveguide element includes: a rib waveguide and a pair of slab portions including a first slab portion and a second slab portion connected to both sides of the rib portion so as to sandwich the rib portion. The rib portion has a cross-sectional dimension which allows the propagation of a fundamental mode and a higher order mode in a predetermined single polarization state, and has a first P-type semiconductor and a first N-type semiconductor forming a PN junction, the first slab portion has a second P-type semiconductor and a P-type conductor connected to each other, the second P-type semiconductor is connected to the first P-type semiconductor of the rib portion, the second slab portion has a second N-type semiconductor and an N-type conductor connected to each other, and the second N-type semiconductor is connected to the first N-type semiconductor of the rib portion.

Abstract translation: 光波导元件包括：肋波导和一对板状部分，其包括连接到肋部分两侧的第一板坯部分和第二板坯部分，以便夹住肋部分。 肋部具有允许在预定的单极化状态下传播基模和高阶模的横截面尺寸，并且具有形成PN结的第一P型半导体和第一N型半导体， 第一板状部具有彼此连接的第二P型半导体和P型导体，第二P型半导体与肋部的第一P型半导体连接，第二板状部具有第二N型半导体， 并且第二N型半导体与肋部的第一N型半导体连接。

公开(公告)号：US20150003782A1

公开(公告)日：2015-01-01

申请号：US14314827

申请日：2014-06-25

Applicant: FUJIKURA LTD.

Inventor： Akira OKA ,  Kazuhiro GOI ,  Kensuke OGAWA ,  Hiroyuki KUSAKA

IPC: G02B6/28 ,  G02B6/27

CPC classification number: G02B6/2804 ,  G02B6/2726 ,  G02B6/2733 ,  G02B6/2821

Abstract: A polarization conversion device includes: a directional coupler that includes an input side optical waveguide and an output side optical waveguide which are disposed in parallel to each other and each of which has a core Assuming that a direction in which the input side optical waveguide and the output side optical waveguide face each other is a width direction and a direction perpendicular to the width direction is a height direction in a cross section perpendicular to a longitudinal direction of each of the input side optical waveguide and the output side optical waveguide, and the directional coupler is configured to couple first light guided through the input side optical waveguide to second light guided through the output side optical waveguide, the polarization direction of the second light is perpendicular to that of the first light.

Abstract translation: 偏振转换装置包括：定向耦合器，其包括彼此平行设置并且每个具有芯的输入侧光波导和输出侧光波导。假设输入侧光波导和 输出侧光波导面彼此相对的宽度方向和垂直于宽度方向的方向是垂直于每个输入侧光波导和输出侧光波导的纵向方向的横截面中的高度方向，并且方向 耦合器被配置为将通过输入侧光波导引导的第一光耦合到通过输出侧光波导引导的第二光，第二光的偏振方向垂直于第一光的偏振方向。