专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20030002786A1 Optical multiplexer/demultiplexer 失效
标题翻译：光复用器/解复用器
公开(公告)号：US20030002786A1
公开(公告)日：2003-01-02
申请号：US10156868
申请日：2002-05-30
申请人： The Furukawa Electric Co., Ltd.
发明人： Isao Ooyama , Hiroyuki Koshi , Takuya Komatsu , Kazuhisa Kashihara
IPC分类号： G02B006/293 , G02B006/26
CPC分类号： G02B6/12007 , G02B6/29352 , G02B6/2938 , G02B2006/12038 , G02B2006/12159
摘要： An optical multiplexer/demultiplexer of the present invention is, for example, a low-cost optical multiplexer/demultiplexer with a low transmission loss, while a chip length of this optical multiplexer/demultiplexer is made short. In an optical multiplexer/demultiplexer in which plural stages of optical multiplexing/demultiplexing circuits 8 (8A to 8G) having Mach-Zehnder interferometer type waveguide structures are connected to each other, an averaged wavelength of cross transmission wavelengths is made longer an averaged wavelength of through transmission wavelengths in each stage of the optical multiplexing/demultiplexing circuits 8 (8A to 8G). In each stage of the optical multiplexing/demultiplexing circuits 8 (8A to 8G), a coupling efficiency of first and second directional coupling portions (1, 2) with respect to the averaged wavelength of the cross transmission wavelengths is set to approximately 50%.
摘要翻译：本发明的光复用器/解复用器例如是具有低传输损耗的低成本光复用器/解复用器，而该光复用器/解复用器的码片长度变短。在其中具有马赫 - 曾德干涉仪型波导结构的多级光复用/解复用电路8（8A至8G）彼此连接的光复用器/解复用器中，使交叉透射波长的平均波长变长通过光复用/解复用电路8（8A〜8G）的各级的发送波长。在光复用/解复用电路8（8A至8G）的每个级中，第一和第二定向耦合部分（1,2）相对于交叉透射波长的平均波长的耦合效率被设置为大约50％。

2. 发明申请

US20030007734A1 Optical multiplexer/demultiplexer 失效
标题翻译：光复用器/解复用器
公开(公告)号：US20030007734A1
公开(公告)日：2003-01-09
申请号：US10117131
申请日：2002-04-08
申请人： THE FURUKAWA ELECTRIC CO., LTD.
发明人： Hiroyuki Koshi , Kazuhisa Kashihara
IPC分类号： G02B006/26 , G02B006/293
CPC分类号： G02B6/29355 , G02B6/2938 , G02B2006/1204 , G02B2006/12061 , G02B2006/121 , G02B2006/12159 , G02B2006/12164 , G02B2006/12183
摘要： An optical multiplexer/demultiplexer includes first and second directional coupling portions in which first and second optical waveguides are provided to transfer a light between the first and second optical waveguides. Lengths of the first and second optical waveguides have a difference (nullL). A product between the difference (nullL) and a refractive index (n) of the first and second optical waveguides approximates a product between a cross-propagation wavelength (null2) and a value (Nnull) substantially equal to an integer (N), and a product between a through-propagation wavelength (null1) and the value (Nnull)null0.5. Power coupling ratio differences are at least approximately 1% and at most approximately 10%. Third power coupling ratios with respect to an average wavelength of the cross-propagation wavelength (null2) and the through-propagation wavelength (null1) are at least approximately 45% and at most approximately 55%.
摘要翻译：光复用器/解复用器包括第一和第二定向耦合部分，其中提供第一和第二光波导以在第一和第二光波导之间传送光。第一和第二光波导的长度具有差（DELTAL）。第一和第二光波导的差（DELTAL）和折射率（n）之间的乘积近似于交叉传播波长（lambd2）和基本上等于整数（N）的值（N'）之间的乘积，以及通过传播波长（lambd1）和值（N'）±0.5之间的乘积。功率耦合比差异至少约为1％，最多约为10％。相对于交叉传播波长（lambd2）和通过传播波长（lambd1）的平均波长的第三功率耦合比率至少为约45％且至多约55％。

3. 发明申请

US20020025111A1 Pumping source apparatus 失效
标题翻译：泵送源设备
公开(公告)号：US20020025111A1
公开(公告)日：2002-02-28
申请号：US09852728
申请日：2001-05-11
申请人： THE FURUKAWA ELECTRIC CO., LTD.
发明人： Hiroyuki Koshi
IPC分类号： G02B006/293
CPC分类号： G02B6/2713 , G02B6/105 , G02B6/274 , G02B6/2786 , G02B6/29319 , G02B6/29355 , G02B6/2938
摘要： Disclosed is a wavelength multiplexing module which provides stable multiplexed output power. The wavelength multiplexing module comprises a plurality of pumping sources for outputting lights of different wavelengths, and a wavelength multiplexer for multiplexing the lights output from the pumping sources. The wavelength multiplexer is provided with optical input sections for respectively receiving the lights output from the pumping sources. Respectively provided between the optical input sections and the pumping sources are depolarizers each of which causes a degree of polarization of the light output from an associated one of the pumping sources to approach zero. Each depolarizer has two polarization-maintaining optical fibers connected in series on an optical path in such a way that primary optic axes of the polarization- maintaining optical fibers obliquely intersect each other.
摘要翻译：公开了提供稳定的多路复用输出功率的波长复用模块。波长复用模块包括用于输出不同波长的光的多个泵浦源和用于多路复用来自泵浦源的光的波长多路复用器。波长多路复用器设置有用于分别接收从泵浦源输出的光的光学输入部分。分别设置在光学输入部分和泵浦源之间的是去偏振器，每个激光器都使来自相关联的一个泵浦源的光输出的偏振度达到零。每个去偏振器具有在光路上串联连接的两个偏振保持光纤，使得偏振保持光纤的主要光轴彼此相交。

4. 发明申请

US20010046361A1 Optical waveguide circuit 有权
标题翻译：光波导电路
公开(公告)号：US20010046361A1
公开(公告)日：2001-11-29
申请号：US09778814
申请日：2001-02-08
申请人： THE FURUKAWA ELECTRIC CO., LTD.
发明人： Kazuhisa Kashihara , Kazutaka Nara , Hiroyuki Koshi , Takeshi Nakajima
IPC分类号： G02B006/12 , G02B006/34
CPC分类号： G02B6/12023 , G02B6/105 , G02B6/1203 , G02B6/132
摘要： An optical waveguide circuit capable of controlling polarization crosstalk is provided. An under cladding is formed on a silicon substrate (11). A core is formed on the under cladding and has a waveguide structure in which one or more optical input waveguides (12) arranged side by side are connected at their exit ends with a first slab guide (13), which is connected at its exit end with an arrayed waveguide (14) composed of plural channel waveguides (14a) that are different in length with the difference preset, and the arrayed waveguide (14) is connected at its exit end with a second slab waveguide (15), which is connected at its exit end with a plurality of optical output waveguides (16). The top of the core is covered with an over cladding to form an optical waveguide portion (10) composed of the under and over claddings and the core. A plurality of light beams having different wavelengths are entered to the core in the multiplexed manner, and the entered light beams are outputted separately on the basis of the wavelength. The claddings and the core are formed from silica glass. The birefringence B in the optical waveguide portion (10) is set so as to satisfy nullBnullnull1.2null10null4 to reduce polarization crosstalk to null20 dB or less.
摘要翻译：提供了能够控制偏振串扰的光波导电路。在硅衬底（11）上形成下包层。在下包层上形成有芯，并且具有波导结构，其中并排布置的一个或多个光输入波导（12）在其出口端处连接有第一板引导件（13），其在其出口端连接具有由多个不同长度与差异预定的多个通道波导（14a）组成的阵列波导（14），并且阵列波导（14）的出口端与第二平板波导（15）连接，第二平板波导（15）被连接在其出口端具有多个光输出波导（16）。芯的顶部覆盖有外包层，以形成由下包层和芯层组成的光波导部分（10）。具有不同波长的多个光束以复用方式输入到核心，并且基于波长分离地输入输入的光束。包层和芯由石英玻璃形成。光波导部分（10）中的双折射B被设定为满足| B |> = 1.2×10 -4，以将极化串扰降低到-20dB或更小。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式