公开(公告)号：US08385743B2

公开(公告)日：2013-02-26

申请号：US09781564

申请日：2001-02-13

申请人： Toshiaki Okuno ,  Masayuki Nishimura

发明人： Toshiaki Okuno ,  Masayuki Nishimura

IPC分类号： H04J14/02

CPC分类号： H04B10/296 ,  H04J14/0221

摘要： Signal wavelengths λ1, λ2, λ3 of signal light components multiplexed at signal multiplexing sections 31, 41, 51 of multiplexing stations 3, 4, 5 installed on the input end side of an EDFA 2 on an optical transmission line 1 are set such that the wavelength-dependent noise figure of EDFA 2 successively decreases from the signal wavelength λ1 multiplexed at the signal multiplexing section 31 closest to the input end of EDFA 2 to λ2 and λ3. On the other hand, the transmission length of individual signal light component before being fed into the EDFA 2 is the shortest in the signal light component at λ1 and successively increases at λ2 and λ3. Thus, the order of magnitude of input signal light power is the same as the order of highness of noise figure in EDFA 2, whereby fluctuations in S/N ratio in the resulting amplified light are reduced.

摘要翻译： 信号光分量的信号波长λ1，λ2，λ3被复用在安装在光传输线路1上的EDFA2的输入端侧的复用站3,4,5的信号多路复用部分31,41,51处， EDFA2的与波长相关的噪声系数从最靠近EDFA2的信号复用部分31多路复用的信号波长λ1连续减小到λ2和λ3。 另一方面，馈送到EDFA2中的各个信号光分量的发送长度在λ1的信号光分量中最短，并且在λ2和λ3处依次增加。 因此，输入信号光功率的数量级与EDFA2中的噪声系数高的顺序相同，从而降低了所得放大的光的S / N比的波动。

公开(公告)号：US20110122644A1

公开(公告)日：2011-05-26

申请号：US12007835

申请日：2008-01-16

申请人： Toshiaki Okuno

发明人： Toshiaki Okuno

IPC分类号： H01S3/00 ,  G02B6/00

CPC分类号： H01S3/0057 ,  G02B6/02028 ,  G02B6/02285 ,  G02B6/03627 ,  G02B6/03644 ,  G02B6/03666 ,  G02B6/29377 ,  H01S3/06725

摘要： The present invention relates to a light source apparatus having a structure for stably supplying broadband pulsed light having a wavelength spectrum with an excellent flatness over a wide band. The light source apparatus employs, as a seed light source, a short-pulsed light source having such an excellent output pulse characteristic that the frequency bandwidth extending until the output pulse drops by 10 dB or 20 dB from a peak is 5 THz or more. The light source apparatus also includes a broadband light producing fiber having an optical characteristic suitable for combining with the short-pulsed light source. The broadband light producing fiber inputs pulsed light from the pulsed light source, and produces the broadband pulsed light by utilizing a nonlinear optical phenomenon. This structure yields broadband pulsed light having such a wavelength spectrum that a region whose power fluctuation is suppressed to 6 dB or less extends over 100 nm or more.

摘要翻译： 本发明涉及一种光源装置，其具有稳定地提供宽带脉冲光的结构，该宽带脉冲光具有在宽带上具有优异的平坦度的波长谱。 光源装置使用具有如此优异的输出脉冲特性的短脉冲光源，使得直到输出脉冲从峰值下降10dB或20dB的频带宽度为5THz以上。 光源装置还包括具有适于与短脉冲光源组合的光学特性的宽带光产生光纤。 宽带光纤产生光纤从脉冲光源输入脉冲光，并利用非线性光学现象产生宽带脉冲光。 这种结构产生具有这样的波长频谱的宽带脉冲光，使得功率波动抑制在6dB以下的区域延伸超过100nm以上。

公开(公告)号：US07865046B2

公开(公告)日：2011-01-04

申请号：US12296516

申请日：2007-04-13

申请人： Junichi Tanaka ,  Akihiko Sano ,  Toshiaki Okuno ,  Yoshihisa Ishida ,  Akira Enami ,  Hiroshi Sameshima ,  Naru Yasuda ,  Hayami Hosokawa

发明人： Junichi Tanaka ,  Akihiko Sano ,  Toshiaki Okuno ,  Yoshihisa Ishida ,  Akira Enami ,  Hiroshi Sameshima ,  Naru Yasuda ,  Hayami Hosokawa

IPC分类号： G02B6/30 ,  G02B6/36

CPC分类号： G02B6/43 ,  G02B6/4201 ,  G02B6/4214

摘要： A connection member electrically connects an optical element configured to convert an electric signal to an optical signal or to convert an optical signal to an electric signal, a first substrate including an incident/releasing port of an optical transmission path for an optical signal at least one end portion thereof, and a second substrate to each other. The optical transmission path is optically coupled with the optical element to transmit the optical the connection. The connection member includes a connection unit connected to the second substrate and a holding unit having elasticity and holding the first substrate. The holding unit is provided with an electrode at a connecting position to the first substrate, and the holding unit holds the first substrate by connecting the first substrate to the electrode.

摘要翻译： 连接构件电连接被配置为将电信号转换为光信号的光学元件或将光信号转换为电信号，第一基板包括用于光信号的光传输路径的入射/释放端口，至少一个 端部，第二基板。 光传输路径与光学元件光学耦合以传输光学连接。 连接构件包括连接到第二基板的连接单元和具有弹性并保持第一基板的保持单元。 保持单元在与第一基板的连接位置处设置有电极，并且保持单元通过将第一基板连接到电极来保持第一基板。

公开(公告)号：US20100134868A1

公开(公告)日：2010-06-03

申请号：US12530753

申请日：2008-03-13

申请人： Toshiaki Okuno

发明人： Toshiaki Okuno

IPC分类号： G02F1/365 ,  G02F1/23 ,  G02B26/00

CPC分类号： G02F1/353 ,  G02F1/3536 ,  G02F1/365 ,  G02F2201/02

摘要： Provided is a wavelength converter having a simple and low-cost structure. The wavelength converter generates converted light having a wavelength different from that of input light. The wavelength converter includes (1) a pump light source that outputs pump light, (2) an optical multiplexer that combines and outputs input light and the pump light, (3) a first optical fiber that receives and guides the input light and the pump light that have been combined and output by the optical multiplexer and generates converted light using a nonlinear optical phenomenon that occurs while the first optical fiber guides the input light and the pump light, the first optical fiber being coiled, and (4) zero-dispersion wavelength adjusting means that adjusts a zero-dispersion wavelength of the first optical fiber.

摘要翻译： 提供了具有简单且低成本结构的波长转换器。 波长转换器产生具有与输入光不同的波长的转换光。 波长转换器包括（1）输出泵浦光的泵浦光源，（2）组合并输出输入光和泵浦光的光复用器，（3）接收并引导输入光和泵的第一光纤 由光复用器组合并输出的光，并且使用在第一光纤引导输入光和泵浦光时发生的非线性光学现象产生转换光，第一光纤被卷绕，以及（4）零色散 波长调节装置，其调节第一光纤的零色散波长。

公开(公告)号：US20090279827A1

公开(公告)日：2009-11-12

申请号：US12297304

申请日：2007-04-26

申请人： Akihiko Sano ,  Junichi Tanaka ,  Toshiaki Okuno ,  Naru Yasuda ,  Hayami Hosokawa

发明人： Akihiko Sano ,  Junichi Tanaka ,  Toshiaki Okuno ,  Naru Yasuda ,  Hayami Hosokawa

IPC分类号： G02B6/12 ,  B32B37/12

CPC分类号： G02B6/43 ,  G02B6/4212 ,  G02B6/4214 ,  H01L31/0232

摘要： An optical module has an optical element which transmits or receives an optical signal, an optical transmission line optically coupled to the optical element to transmit the optical signal, and a board to which at least one end portion including an incident and outgoing port of the optical signal in the optical transmission line and the optical element are fixed. A wall facing a side surface of the optical transmission line is provided in the board. A first space is provided between the board and the optical transmission line, and a second space is provided between the side surface of the optical transmission line and the wall. The first and second spaces are filled with a bonding agent.

摘要翻译： 光学模块具有发送或接收光信号的光学元件，光学耦合到光学元件以传输光信号的光传输线，以及一个板，至少一个端部包括光学入射和出射端口 在光传输线路和光学元件中的信号是固定的。 在该板上设置面向光传输线的侧面的壁。 第一空间设置在基板与光传输线之间，第二空间设置在光传输线的侧面与壁之间。 第一和第二空间填充有粘合剂。

公开(公告)号：US07551822B2

公开(公告)日：2009-06-23

申请号：US12036576

申请日：2008-02-25

申请人： Toshiaki Okuno

发明人： Toshiaki Okuno

IPC分类号： G02B6/02 ,  G02B6/32 ,  G02B6/255

CPC分类号： G02F1/353 ,  G02F1/365 ,  G02F2001/3528

摘要： A nonlinear optical signal-treating apparatus can suppress the distortion of pulse light to be inputted into an optical fiber to an allowable level or less. The apparatus comprises a pulse light source for outputting first pulse light, a first optical fiber, a second optical fiber that is spliced with the first optical fiber and has a mode-field diameter smaller than that of the first optical fiber, and a light-introducing system for inputting the first pulse light into the first optical fiber. The second optical fiber receives the first pulse light and generates second pulse light having a newly produced wavelength. The peak power ratio of the first pulse light outputted from the first optical fiber to that inputted into the first optical fiber and the pulse width ratio of the first pulse light outputted from the first optical fiber to that inputted into the first optical fiber are 0.5 to 1.5.

摘要翻译： 非线性光信号处理装置可以将输入到光纤的脉冲光的失真抑制到允许值以下。 该装置包括用于输出第一脉冲光的脉冲光源，第一光纤，与第一光纤接合的模场直径小于第一光纤的模场直径的第二光纤， 用于将第一脉冲光输入到第一光纤中的引入系统。 第二光纤接收第一脉冲光并产生具有新产生的波长的第二脉冲光。 从第一光纤输出的第一脉冲光与输入到第一光纤的第一脉冲光的峰值功率比和从第一光纤输出的第一脉冲光的脉冲宽度比与输入到第一光纤的第一脉冲光的峰值功率比分别为0.5〜 1.5。

公开(公告)号：US20090022189A1

公开(公告)日：2009-01-22

申请号：US11883364

申请日：2007-01-17

申请人： Toshiaki Okuno

发明人： Toshiaki Okuno

IPC分类号： H01S3/10

CPC分类号： G02F1/3513 ,  G02F2001/3503 ,  G02F2001/3528

摘要： The present invention relates to a light source apparatus that has a base structure capable of generating SC light and further having a structure that enables the shaping of the spectral waveform of the SC light, power adjustment of the SC light, or adjustment of the frequency of repetition of the pulse train that contains the SC light. For example, a light source apparatus that enables shaping of spectral waveforms comprises a seed light source that emits seed light which is a pulse train or continuous light; an optical fiber that generates SC light from the seed light, and spectrum shaping means for completely or partially changing the spectral waveform of the SC light. The shaping of the spectral waveform changes the maximum power of the seed light by changing the optical coupling efficiency of the seed light source and optical fiber, for example, thereby suitably deforms the spectrum of the light.

摘要翻译： 本发明涉及一种光源装置，其具有能够产生SC光的基底结构，并且还具有能够对SC光的光谱波形进行整形，SC光的功率调整或调整频率的结构 重复包含SC灯的脉冲串。 例如，能够形成光谱波形的光源装置包括发射作为脉冲串或连续光的种子光的种子光源; 从种子光产生SC光的光纤以及用于完全或部分地改变SC光的光谱波形的光谱整形装置。 光谱波形的变形例如通过改变种子光源和光纤的光耦合效率来改变种子光的最大功率，从而适当地使光谱变形。

公开(公告)号：US07324756B2

公开(公告)日：2008-01-29

申请号：US10407935

申请日：2003-04-07

申请人： Masato Tanaka ,  Toshiaki Okuno ,  Fumiyoshi Ohkubo

发明人： Masato Tanaka ,  Toshiaki Okuno ,  Fumiyoshi Ohkubo

IPC分类号： H04J14/02

CPC分类号： H04J14/0224 ,  H04J14/06

摘要： It is an object of the present invention to provide an optical transmission system in which multiple optical frequencies can be efficiently used and the change of the system can be easily made, and to provide an optical demultiplexer suitable for such optical transmission system. In an optical demultiplexer according to the present invention, signal light having a plurality of wavelength components arranged on a grid having predetermined frequency intervals is input from an input port thereof to be demultiplexed. The demultiplexed signal lights output from the output ports thereof have a plurality of wavelength components, respectively, and any three wavelength components, fa, fb, and fd, that satisfy the following conditions: fa

摘要翻译： 本发明的目的是提供一种可以有效利用多个光频率并且可以容易地进行系统改变的光传输系统，并且提供一种适用于这种光传输系统的光解复用器。 在根据本发明的光解复用器中，从其输入端口输入具有布置在具有预定频率间隔的网格上的多个波长分量的信号光，以被解复用。 从其输出端口输出的解复用的信号光分别具有多个波长分量，并且任何三个波长分量，f a，b，f b， d ，满足以下条件：f 并且f 具有以下关系：2f＆lt; b＆gt;＆lt;＆lt; 其中N表示整数，Deltaf表示每个预定频率间隔。

公开(公告)号：US07202994B2

公开(公告)日：2007-04-10

申请号：US10804174

申请日：2004-03-19

申请人： Toshiaki Okuno ,  Masaaki Hirano ,  Takatoshi Kato

发明人： Toshiaki Okuno ,  Masaaki Hirano ,  Takatoshi Kato

IPC分类号： G02F1/365

CPC分类号： G02B6/02242 ,  G02B6/02004 ,  G02B6/0281 ,  G02B6/03627 ,  G02B6/03644 ,  G02B6/03666 ,  G02F1/3536 ,  G02F1/365

摘要： The present invention relates to a wavelength converter of structure enabling generation of converted light with high power even with a large difference between the wavelength of pumping light and the zero-dispersion wavelength. The wavelength converter includes an optical fiber having a dispersion slope whose absolute value at the wavelength of 1550 nm is 0.01 ps/nm2/km or less, for example.

摘要翻译： 本发明涉及一种波长转换器，其结构能够即使在泵浦光的波长和零色散波长之间具有大的差异的情况下也能够产生具有高功率的转换光。 波长转换器包括例如具有波长1550nm的绝对值为0.01ps / nm 2 / km以下的色散斜率的光纤。

公开(公告)号：US20070053641A1

公开(公告)日：2007-03-08

申请号：US11516517

申请日：2006-09-07

申请人： Masaaki Hirano ,  Tetsuya Nakanishi ,  Toshiaki Okuno

发明人： Masaaki Hirano ,  Tetsuya Nakanishi ,  Toshiaki Okuno

IPC分类号： G02B6/02 ,  G02B6/028 ,  G02B6/036

CPC分类号： G02B6/02214 ,  G02B6/02028 ,  G02B6/02242 ,  G02B6/0228 ,  G02B6/02285 ,  G02B6/0281 ,  G02B6/03627 ,  G02B6/03644 ,  G02B6/0365 ,  G02B6/03666 ,  G02F1/3536 ,  G02F2201/02

摘要： There is disclosed an optical fiber wherein an absolute value of the fourth order dispersion β4 of fourth derivative β4 of propagation constant β with respect to angular frequency ω at a mean zero dispersion wavelength λ0 in an overall length is not more than 5×10−56 s4/m and wherein a fluctuation of a zero dispersion wavelength along a longitudinal direction is not more than ±0.6 nm.

摘要翻译： 公开了一种光纤，其中传播常数β的第四导数β4的四阶色散β4的绝对值相对于平均值为0的角频率ω 在整个长度上的色散波长λ0 <0>不大于5×10 -6 / 4，其中零色散波长的波动沿着 纵向方向不大于±0.6nm。