公开(公告)号：US20180205465A1

公开(公告)日：2018-07-19

申请号：US15868054

申请日：2018-01-11

Applicant: FUJITSU LIMITED ,  Photonics Electronics Technology Research Association

Inventor： Shinsuke Tanaka ,  Tatsuya Usuki ,  Toshihiko Mori

IPC: H04B10/524 ,  G02F1/025

CPC classification number: H04B10/524 ,  G02F1/025 ,  G02F2203/50

Abstract: An optical transmitter includes: a driving circuit that includes drivers each corresponding to a configuration bit of an input electrical data sequence; a MZ optical modulator that includes a first phase shifter provided in an arm and a second phase shifter provided in an arm; first capacitance elements that are electrically connected between the driving unit and the first phase shifter, each include an electric capacity weighted in response to a bit number of the configuration bit, and generate a first multilevel signal to be supplied to the first phase shifter; and second capacitance elements that are electrically connected between the driving circuit and the second phase shifter, each include an electric capacity weighted in response to a bit number of the configuration bit, and generate a second multilevel signal to be supplied to the second phase shifter.

公开(公告)号：US09971099B2

公开(公告)日：2018-05-15

申请号：US15703069

申请日：2017-09-13

Applicant: NEC CORPORATION ,  PHOTONICS ELECTRONICS TECHNOLOGY RESEARCH ASSOCIATION

Inventor： Masatoshi Tokushima ,  Jun Ushida

IPC: G02B6/34 ,  G02B27/09 ,  G02B1/11

CPC classification number: G02B6/34 ,  G02B1/11 ,  G02B27/095

Abstract: A grating coupler includes a grating including a core and an anti-phase reflection coating provided on at least one part of the grating. The anti-phase reflection coating includes a high refractive index layer and a buffer layer. The high refractive index layer has at least one selected from a plurality of attributes characterizing the high refractive index layer. The at least one selected attribute gradually deceases along a propagation direction of light in the core of the grating.

公开(公告)号：US20170351024A1

公开(公告)日：2017-12-07

申请号：US15607957

申请日：2017-05-30

Applicant: FUJITSU LIMITED ,  Photonics Electronics Technology Research Association

Inventor： Akinori Hayakawa

IPC: G02B6/12

CPC classification number: G02B6/12 ,  G02B6/00 ,  G02B2006/12085 ,  G02B2006/12147 ,  G02B2006/12159

Abstract: An optical circuit module comprises a substrate with a first optical coupler connected to a first optical waveguide and a second optical coupler connected to a second optical waveguide on a substrate surface side; and a semiconductor photonic device mounted on the substrate, wherein the semiconductor photonic device has a third optical waveguide and a fourth optical waveguide extending to a first end face that faces the substrate surface, and wherein the third optical waveguide is optically connected to the first optical coupler and the fourth optical waveguide is optically connected to the second optical coupler.

公开(公告)号：US20170227713A1

公开(公告)日：2017-08-10

申请号：US15377268

申请日：2016-12-13

Applicant: Oki Electric Industry Co., Ltd. ,  Photonics Electronics Technology Research Association

Inventor： Hideaki OKAYAMA

IPC: G02B6/12 ,  G02B6/122 ,  G02B6/28

CPC classification number: G02B6/12016 ,  G02B6/1228 ,  G02B6/2813 ,  G02B2006/12061 ,  G02B2006/12097

Abstract: There is provided an optical multiplexing and de-multiplexing element which is provided with a slab waveguide and a waveguide structure and can reduce radiation loss caused in a connection part between the slab waveguide and the waveguide structure. The waveguide structure includes a multimode interference (MMI) waveguide coupler and a narrow-width waveguide, the MMI waveguide coupler and the narrow-width waveguide are connected to each other in this order from a connection position with the slab waveguide along the waveguide direction, step portions are formed on both sides of the MMI waveguide coupler along the waveguide direction, and the thickness of the step portion is smaller than the thickness of the MMI waveguide coupler.

公开(公告)号：US09678288B2

公开(公告)日：2017-06-13

申请号：US14904038

申请日：2014-07-09

Applicant: Photonics Electronics Technology Research Association

Inventor： Shigeki Takahashi

IPC: G02B6/42 ,  G02B6/122 ,  G02B6/293 ,  G02B6/28 ,  G02B6/12

CPC classification number: G02B6/4209 ,  G02B6/122 ,  G02B6/1228 ,  G02B6/2804 ,  G02B6/29344 ,  G02B2006/12121

Abstract: A low-cost optical circuit, in which influence of reflected light is reduced, is provided. According to an embodiment of the present invention, an optical circuit (200) comprises a first optical coupler (204A) having at least two outputs, and a second optical coupler (204B) coupled to at least one of the outputs of the first optical coupler (204A), and wherein the ratio of an intensity of light reflected from the first optical coupler (204A) to an intensity of light inputted to the first optical coupler is smaller than the ratio of an intensity of light reflected from the second optical coupler (204B) to an intensity of light inputted to the second optical coupler.

公开(公告)号：US20170068047A1

公开(公告)日：2017-03-09

申请号：US15243718

申请日：2016-08-22

Applicant: RENESAS ELECTRONICS CORPORATION ,  PHOTONICS ELECTRONICS TECHNOLOGY RESEARCH ASSOCIATION

Inventor： TATSUYA USAMI ,  KEIJI SAKAMOTO ,  YOSHIAKI YAMAMOTO ,  SHINICHI WATANUKI ,  MASARU WAKABAYASHI ,  TOHRU MOGAMI ,  TSUYOSHI HORIKAWA ,  KEIZO KINOSHITA

IPC: G02B6/12 ,  G02B6/136 ,  G02B6/132

CPC classification number: G02B6/12002 ,  G02B6/132 ,  G02B6/136

Abstract: A semiconductor device is provided with an insulating layer formed on a base substrate, an optical waveguide composed of a semiconductor layer formed on the insulating layer, and an insulating film formed along an upper surface of the insulating layer and a front surface of the optical waveguide. A peripheral edge portion of a lower surface of the optical waveguide is separated from the insulating layer, and the insulating film is buried between the peripheral edge portion and the insulating layer.

Abstract translation: 半导体器件设置有形成在基底基板上的绝缘层，由形成在绝缘层上的半导体层构成的光波导和沿绝缘层的上表面形成的绝缘膜和光波导的前表面 。 光波导的下表面的周缘部与绝缘层分离，绝缘膜埋设在周缘部和绝缘层之间。

公开(公告)号：US09541718B2

公开(公告)日：2017-01-10

申请号：US14781249

申请日：2014-03-20

Applicant: Photonics Electronics Technology Research Association

Inventor： Ichiro Ogura ,  Koichi Takemura ,  Mitsuru Kurihara ,  Toshinori Uemura ,  Akio Ukita ,  Kazuhiko Kurata

IPC: G02B6/12 ,  G02B6/13 ,  G02B6/42 ,  G02B6/138 ,  G02B6/30

CPC classification number: G02B6/4251 ,  G02B6/12004 ,  G02B6/138 ,  G02B6/305 ,  G02B6/4207 ,  G02B6/4214 ,  G02B6/423 ,  G02B6/4248 ,  G02B6/425 ,  G02B6/4279 ,  G02B6/428 ,  G02B6/4292

Abstract: A photoelectric hybrid device includes an optical connector on a flat optical surface at one end of vertical optical waveguides for inputting and outputting an optical signal. Integration of the photoelectric hybrid device into an interposer or the like is standardized. The photoelectric hybrid device includes: conductive pins connected to an electric signal pathway for a photoelectric hybrid substrate; a translucent member having a flat optical surface and a translucent part; and self-organizing optical waveguides that form an optical path between the translucent part and an optical waveguide. The flat optical surface is not lower than the tops of the electrical connection parts on the conductive pins. Collision of the optical connector and the tops of the electrical connection parts can be avoided when an optical connector on which an optical waveguide that transmits an optical signal among the optical waveguides.

Abstract translation: 光电混合器件包括在用于输入和输出光信号的垂直光波导的一端的平坦光学表面上的光连接器。 将光电混合器件集成到插入器等中是标准化的。 光电混合器件包括：连接到光电复合衬底的电信号通路的导电引脚; 半透明部件，具有平坦的光学表面和半透明部分; 以及在半透明部分和光波导之间形成光路的自组织光波导。 平面光学表面不低于导电引脚上的电连接部分的顶部。 当在其中在光波导中传输光信号的光波导的光连接器时，可以避免光连接器和电连接部分的顶部的碰撞。

公开(公告)号：US20160223748A1

公开(公告)日：2016-08-04

申请号：US15093833

申请日：2016-04-08

Applicant: Oki Electric Industry Co., Ltd. ,  National Institute Of Advanced Industrial Science And Technology ,  Photonics Electronics Technology Research Association

Inventor： Hideki ONO ,  Tsuyoshi HORIKAWA ,  Naoki HIRAYAMA

IPC: G02B6/122 ,  G02B6/34 ,  G02B6/12 ,  G02B6/30 ,  G02B6/124 ,  G02B6/126

CPC classification number: G02B6/1228 ,  G02B6/12002 ,  G02B6/124 ,  G02B6/126 ,  G02B6/136 ,  G02B6/305 ,  G02B6/34 ,  G02B2006/12061 ,  G02B2006/12147

Abstract: An optical device includes an optical waveguide provided on a principal surface of a substrate. The optical waveguide includes a core and a cladding provided around the core. The cladding is configured by a substance having a refractive index smaller than 71.4% of the refractive index of the core. The core has constituent atoms substantially forming a diamond lattice structure. The optical waveguide has a light input/output part through which a light beam is input and/or output. The light input/output part decreases stepwise in thickness towards an output end while tapering down in its width. The core is provided in the light input/output part to have a (111) plane or an equivalent plane to the (111) plane exposed on a face of a riser of the stepwise thickness of the light input/output part.

Abstract translation: 光学装置包括设置在基板的主表面上的光波导。 光波导包括芯和围绕芯设置的包层。 包层由折射率小于芯的折射率的71.4％的物质构成。 核具有基本形成金刚石晶格结构的成分原子。 光波导具有输入和/或输出光束的光输入/输出部分。 光输入/输出部分朝向输出端逐渐减小，同时在其宽度上逐渐减小。 芯体设置在光输入/输出部分中，以具有（111）平面或暴露在光输入/输出部分的逐级厚度的提升板的表面上的（111）面的等效平面。

公开(公告)号：US20160218481A1

公开(公告)日：2016-07-28

申请号：US14992342

申请日：2016-01-11

Applicant: FUJITSU LIMITED ,  Photonics Electronics Technology Research Association

Inventor： Tomoyuki Akiyama

IPC: H01S5/00 ,  G02F1/025 ,  H01S5/0687 ,  H01S5/026 ,  H01S5/06

CPC classification number: H01S5/0656 ,  G02F1/225 ,  G02F2001/211 ,  G02F2001/213 ,  H01S5/0612 ,  H01S5/0687 ,  H01S5/12

Abstract: A modulated light source includes an FP laser that emits light in a plurality of Fabry-Perot (FP) modes, a band-pass filter whose center wavelength can be modulated, a light reflector that selectively feeds only light having passed through the modulation filter back to the FP laser, and a wavelength adjustment mechanism that adjusts the center wavelength so as to coincide with one of the predetermined FP mode when the light fed back to the FP laser is used as seed light for stimulated emission of radiation to cause selective light emission at an oscillation wavelength.

Abstract translation: 调制光源包括发射多个法布里 - 珀罗（FP）模式的光的FP激光器，可调制其中心波长的带通滤光器，仅反射经过调制滤光器的光反射的光反射器 并且当将反馈到FP激光的光用作用于受激发射的辐射的种子光以引起选择性发光时，调整中心波长以与预定FP模式之一一致的波长调节机构 在振荡波长处。

公开(公告)号：US09348154B2

公开(公告)日：2016-05-24

申请号：US14529740

申请日：2014-10-31

Applicant: FUJITSU LIMITED ,  Photonics Electronics Technology Research Association

Inventor： Akinori Hayakawa

IPC: H04B10/572 ,  G02F1/025 ,  G02F1/01 ,  G02F1/225 ,  H04B10/50 ,  G02B6/28 ,  G02B6/42 ,  G02F1/015 ,  G02B6/293

CPC classification number: G02F1/025 ,  G02B6/28 ,  G02B6/29364 ,  G02B6/4215 ,  G02F1/0147 ,  G02F1/225 ,  G02F2001/0151 ,  G02F2201/16 ,  G02F2203/15 ,  H04B10/5057 ,  H04B10/572

Abstract: An optical resonator apparatus includes an optical resonator unit wherein ring optical resonators each including a first optical waveguide and a resonance wavelength adjustment electrode are coupled in cascade connection and round-trip lengths of the ring optical waveguides are different from each other and vary in order from an input side to an output side, and a controller that adjusts a resonance wavelength of each ring optical resonator in order beginning with the ring optical resonator provided at the most input side so as to match with an input light wavelength and, when an inter-channel occurs, adjusts the resonance wavelength of the first ring optical resonator from the input side so as to match with a second-matching input light wavelength and adjusts the resonance wavelengths of the second and succeeding ring optical resonators from the input side so as to match with the first-matching input light wavelength.

Abstract translation: 光谐振器装置包括光谐振器单元，其中每个包括第一光波导和共振波长调节电极的环形光谐振器以级联方式耦合，环形光波导的往返长度彼此不同，并且从 输入侧的输入侧，以及控制器，其以从输入侧的最大输入侧设置的环状光学谐振器开始依次调整各环状光谐振器的共振波长，以便与输入光波长相匹配， 从输入侧调整第一环形光谐振器的共振波长，以便与第二匹配输入光波长相匹配，并且从输入侧调节第二和后续环形光谐振器的谐振波长，以便匹配 具有第一匹配输入光波长。