公开(公告)号：US09438005B1

公开(公告)日：2016-09-06

申请号：US14293604

申请日：2014-06-02

Applicant: Google Inc.

Inventor： Xiangjun Zhao ,  Cedric Fung Lam ,  Steven Fong

IPC: H01S3/10 ,  H01S3/139 ,  H01S5/0625 ,  H01S5/125

CPC classification number: H01S5/06256 ,  H01S5/0014 ,  H01S5/02415 ,  H01S5/0617 ,  H01S5/0625 ,  H01S5/06255 ,  H01S5/06804 ,  H01S5/125

Abstract: A method of calibrating a tunable laser having a distributed Bragg reflector includes, aligning a reflection peak of the distributed Bragg reflector with a target cavity mode of a plurality of cavity modes defined by a total optical path length inside a resonant cavity of the tunable laser. The method includes aligning a resultant lasing mode with a target wavelength of an output wavelength grid. The resultant lasing mode is formed by alignment of the reflection peak of the distributed Bragg reflector with the target cavity mode. The method also includes setting a target output power and a target extinction ratio of the tunable laser.

Abstract translation: 校准具有分布式布拉格反射器的可调谐激光器的方法包括：将分布布拉格反射器的反射峰与由可调谐激光器的谐振腔内部的总光路长度限定的多个空腔模式的目标腔模式对准。 该方法包括将所得的激光模式与输出波长网格的目标波长对准。 所得到的激光模式是通过将分布式布拉格反射器的反射峰与目标空腔模式对准而形成的。 该方法还包括设置可调激光器的目标输出功率和目标消光比。

公开(公告)号：US09405070B1

公开(公告)日：2016-08-02

申请号：US14713284

申请日：2015-05-15

Applicant: Alcatel-Lucent USA Inc.

Inventor： Guilhem de Valicourt ,  Carlo Ferrari

IPC: G02B6/28 ,  G02B6/12 ,  H01S3/067 ,  G02F1/01 ,  G11C21/00

CPC classification number: G02B6/2861 ,  G02B6/12004 ,  G11C13/04 ,  G11C21/00 ,  H01S3/06754 ,  H01S5/0625 ,  H01S5/1007 ,  H01S5/101 ,  H01S5/5027

Abstract: We disclose an optical buffer having a plurality of optical ports. In some embodiments, an optical signal to be stored may be injected into the buffer through any one of the optical ports and then may be ejected from the buffer, after being stored therein for a selectable amount of time, through any one of the optical ports as well. This feature advantageously enables the optical buffer to also function as an optical switch or router. In an example embodiment, the optical buffer comprises two optical recirculation loops, each of which can store the optical signal by causing it to circulate therein. The buffer is configured to compensate optical losses incurred by the optical signal during this circulation by transferring the optical signal from one loop to the other through an optical amplifier. Due to the latter feature, the optical buffer may be able to store an optical signal, with an acceptable OSNR, for a significantly longer time than certain conventional optical buffers.

Abstract translation: 我们公开了具有多个光学端口的光学缓冲器。 在一些实施例中，要存储的光信号可以通过任何一个光端口注入到缓冲器中，然后可以通过任何一个光端口在缓冲器中存储可选择的时间量之后从缓冲器中弹出 以及。 该特征有利地使得光学缓冲器也可以用作光学交换机或路由器。 在一个示例性实施例中，光学缓冲器包括两个光学循环回路，每个循环回路可以通过使其在其中循环而存储光学信号。 缓冲器被配置为通过光学放大器将光信号从一个环路传送到另一个环路来补偿在该循环期间由光信号引起的光学损耗。 由于后一个特征，光学缓冲器可能能够存储具有可接受的OSNR的光信号比特定的常规光学缓冲器显着更长的时间。

公开(公告)号：US20150215043A1

公开(公告)日：2015-07-30

申请号：US14168521

申请日：2014-01-30

Applicant: Alcatel-Lucent USA Inc.

Inventor： Helene Francoise Debregeas

IPC: H04B10/2575 ,  G01J3/453 ,  H04B10/61 ,  H01S5/12 ,  H04J14/02 ,  G01J3/45 ,  H01S5/10

CPC classification number: H04B10/2575 ,  G01J3/45 ,  G01J3/453 ,  G01J2003/4534 ,  G02B6/29343 ,  H01S5/0261 ,  H01S5/0625 ,  H01S5/1032 ,  H01S5/1071 ,  H01S5/124 ,  H01S5/142 ,  H04B10/61 ,  H04J14/02

Abstract: An apparatus includes a laser that includes an optical gain medium and first and second optical ring-resonators. The optical gain medium and the optical ring-resonators are serially optically connected together to form one or more segments of an optical cavity of the laser. One of the optical ring-resonators has a Mach-Zehnder interferometer forming an internal optical waveguide segment of the one of the optical ring-resonators.

Abstract translation: 一种装置包括具有光学增益介质和第一和第二光学环形谐振器的激光器。 光学增益介质和光学环形谐振器被串联光学连接在一起以形成激光器的光腔的一个或多个部分。 其中一个光学环形谐振器具有形成光环形谐振器之一的内部光波导段的马赫 - 曾德干涉仪。

公开(公告)号：US09048620B2

公开(公告)日：2015-06-02

申请号：US13995409

申请日：2012-01-11

Applicant: Hideki Watanabe ,  Masaru Kuramoto ,  Tomoyuki Oki

Inventor： Hideki Watanabe ,  Masaru Kuramoto ,  Tomoyuki Oki

IPC: H01S5/00 ,  H01S5/065 ,  H01S5/10 ,  H01S5/14 ,  H01S5/028 ,  B82Y20/00 ,  H01S5/06 ,  H01S5/0625 ,  H01S5/22 ,  H01S5/343

CPC classification number: H01S5/0658 ,  B82Y20/00 ,  H01S5/0287 ,  H01S5/0602 ,  H01S5/0625 ,  H01S5/0657 ,  H01S5/1014 ,  H01S5/141 ,  H01S5/22 ,  H01S5/222 ,  H01S5/34333 ,  H01S2301/176

Abstract: A bi-section type GaN-based semiconductor laser device that has a configuration and a structure in which damage is less likely to be caused in a region in a saturable absorption region that faces a first light emission region is provided. The semiconductor laser device includes a first light emission region, a second light emission region, a saturable absorption region sandwiched by the foregoing light emission regions, a first electrode, and a second electrode. Laser light is emitted from an end face on a second light emission region side thereof. The second electrode is configured of a first portion, a second portion, and a third portion. 1

Abstract translation: 提供了一种双截面型GaN基半导体激光器件，其具有在面向第一发光区域的可饱和吸收区域中不太可能引起损伤的构造和结构。 半导体激光装置包括第一发光区域，第二发光区域，被上述发光区域夹持的可饱和吸收区域，第一电极和第二电极。 激光从其第二发光区域侧的端面发射。 第二电极由第一部分，第二部分和第三部分构成。 1

公开(公告)号：US08411711B2

公开(公告)日：2013-04-02

申请号：US12630367

申请日：2009-12-03

Applicant: Alexey Gubenko ,  Alexey Kovsh ,  Greg Wojcik ,  Daniil Livshits ,  Igor Krestnikov ,  Sergey Mikhrin

Inventor： Alexey Gubenko ,  Alexey Kovsh ,  Greg Wojcik ,  Daniil Livshits ,  Igor Krestnikov ,  Sergey Mikhrin

IPC: H01S3/10 ,  H01S5/00

CPC classification number: H01S5/341 ,  B82Y20/00 ,  H01S5/0014 ,  H01S5/0078 ,  H01S5/0265 ,  H01S5/0625 ,  H01S5/0652 ,  H01S5/1025 ,  H01S5/1096 ,  H01S5/125 ,  H01S5/16 ,  H01S5/187 ,  H01S5/3412 ,  H01S2301/02

Abstract: A semiconductor laser comprises an electrically isolated active section and at least one noise reducing section and operates on a ground state transition of a quantum dot array having inhomogeneous broadening greater than 10 nm. The laser preferably emits more than 10 optical modes such that a total relative intensity noise of each optical mode is less than 0.2% in the 0.001 GHz to 10 GHz range. The spectral power density is preferably higher than 2 mW/nm. An optical transmission system and a method of operating a quantum dot laser with low relative intensity noise of each optical mode are also disclosed.

Abstract translation: 半导体激光器包括电隔离的有源部分和至少一个降噪部分，并对具有大于10nm的不均匀扩展的量子点阵列的基态迁移进行操作。 激光器优选地发射超过10种光学模式，使得每个光学模式的总相对强度噪声在0.001GHz至10GHz的范围内小于0.2％。 光谱功率密度优选高于2mW / nm。 还公开了一种光传输系统和操作每个光模式具有低相对强度噪声的量子点激光器的方法。

公开(公告)号：US08000359B2

公开(公告)日：2011-08-16

申请号：US12332384

申请日：2008-12-11

Applicant: Hiroyasu Sasaki ,  Hideo Arimoto

Inventor： Hiroyasu Sasaki ,  Hideo Arimoto

IPC: H01S5/14 ,  H01S5/0687

CPC classification number: H01S5/141 ,  H01S5/02284 ,  H01S5/0427 ,  H01S5/0625 ,  H01S5/0687

Abstract: A laser device capable of preventing deterioration of a light signal and a controlling method therefor are provided. A wavelength tunable laser module provided with a resonator including the wavelength tunable filter and a semiconductor light amplifier having a phase adjustment region and a light amplifying region, in which a wavelength margin between a peak transmission wavelength of a wavelength tunable filter and a mode hop occurring wavelength on a short wave side is smaller than that on a long wave side includes: a wavelength tunable laser module controller including an optical output sampling portion for detecting light intensity of light emitted from the resonator, a dither signal source for generating a dither signal for varying a phase adjustment signal to be applied to the phase adjustment region so that the detected light intensity becomes the maximum, and an FM signal source for generating an FM signal for oscillating the phase adjustment signal to be applied to the phase adjustment region with a period shorter than a variation period of the dither signal. The optical output sampling portion detects the light intensity in synchronization with oscillation of the phase adjustment signal by the FM signal.

Abstract translation: 提供一种能够防止光信号劣化的激光装置及其控制方法。 一种波长可调激光模块，其具有包括波长可调滤波器的谐振器和具有相位调整区域和光放大区域的半导体光放大器，其中波长可调滤波器的峰值传输波长与发生跳跃的峰值波长之间 短波侧的波长小于长波侧的波长包括：波长可调激光器模块控制器，包括用于检测从谐振器发射的光的光强度的光输出采样部分，用于产生用于产生抖动信号的抖动信号源 改变要施加到相位调整区域的相位调整信号，使得检测到的光强度变得最大;以及FM信号源，用于产生用于使相位调整信号振荡的相关调整信号的FM信号，该相位调整信号以周期 短于抖动信号的变化周期。 光输出采样部分通过FM信号与相位调整信号的振荡同步地检测光强度。

公开(公告)号：US07813388B2

公开(公告)日：2010-10-12

申请号：US11932937

申请日：2007-10-31

Applicant: Kyung Hyun Park ,  Hyun Sung Ko ,  Young Ahn Leem ,  Min Yong Jeon ,  Eun Deok Sim ,  Sung Bock Kim

Inventor： Kyung Hyun Park ,  Hyun Sung Ko ,  Young Ahn Leem ,  Min Yong Jeon ,  Eun Deok Sim ,  Sung Bock Kim

IPC: H01S3/098

CPC classification number: H01S5/0625 ,  H01S5/0658

Abstract: Provided is a self-pulsating laser diode including: a distributed feedback (DFB) section serving as a reflector; a gain section connected to the DFB section and having an as-cleaved facet at one end; a phase control section interposed between the DFB section and the gain section; and an external radio frequency (RF) input portion applying an external RF signal to at least one of the DFB section and the gain section.

Abstract translation: 提供了一种自脉动激光二极管，包括：用作反射器的分布反馈（DFB）部分; 连接到DFB部分并且在一端具有劈裂小面的增益部分; 相位控制部，其插入在所述DFB部和所述增益部之间; 以及外部射频（RF）输入部分，将外部RF信号施加到DFB部分和增益部分中的至少一个。

公开(公告)号：US20100098129A1

公开(公告)日：2010-04-22

申请号：US12642428

申请日：2009-12-18

Applicant: Hideto FURUYAMA

Inventor： Hideto FURUYAMA

IPC: H01S3/083

CPC classification number: H01S5/1071 ,  H01S5/0625 ,  H01S5/1032 ,  H01S5/2224 ,  H01S5/227

Abstract: A laser-induced optical wiring apparatus is provided wherein optical wiring is realized by digital operations of a laser oscillator. The apparatus includes optical ring resonator formed of a loop-shaped optical waveguide on substrate. At least two optical gain sections are provided on the optical ring resonator. When each optical gain section is activated, a laser oscillator including the optical ring resonator and optical gain sections is enabled to oscillate. In this state, the gain of at least one of the optical gain sections is changed in accordance with an input signal, thereby changing the optical route gain of the optical ring resonator to change the oscillation state of the laser oscillator. A change in the laser oscillation state is detected by the optical gain section other than the at least one optical gain section, whereby an output signal is acquired.

Abstract translation: 提供一种激光诱导光线路装置，其中通过激光振荡器的数字操作实现光布线。 该装置包括由基板上的环形光波导形成的光环谐振器。 在光环谐振器上设置至少两个光增益部分。 当每个光学增益部分被激活时，包括光环谐振器和光学增益部分的激光振荡器能够振荡。 在这种状态下，根据输入信号改变至少一个光增益部分的增益，由此改变光环谐振器的光路增益以改变激光振荡器的振荡状态。 通过除了至少一个光学增益部分之外的光学增益部分检测激光振荡状态的变化，由此获取输出信号。

公开(公告)号：US20100014871A1

公开(公告)日：2010-01-21

申请号：US12458504

申请日：2009-07-14

Applicant: Alexandre Shen ,  Guang-Hua Duan

Inventor： Alexandre Shen ,  Guang-Hua Duan

IPC: H04B10/00 ,  H01S5/026 ,  H01S5/30 ,  G02B27/28 ,  G02F1/03

CPC classification number: H01S5/026 ,  H01S5/0617 ,  H01S5/06236 ,  H01S5/0625

Abstract: An photonic device, comprising one section of a material which is different from the material of another section such that the two sections present different optical birefringent index values. This causes a first set of polarization modes to move in a spectral space with a different velocity than a second set of polarization modes. A bias current, or voltage, is used for controlling the overall birefringence effect in the device. The biasing for controlling the birefringence effect is performed such the TE modes and the TM modes of the device are made to coincide in their respective spectral position. Thus the device is made insensitive, or presents substantially reduced sensitivity, to the polarization of any incoming optical signal.

Abstract translation: 一种光子器件，包括与另一部分的材料不同的材料的一部分，使得两个部分呈现不同的光学双折射指数值。 这导致第一组偏振模式以与第二组偏振模式不同的速度在光谱空间中移动。 使用偏置电流或电压来控制器件中的整体双折射效应。 执行用于控制双折射效应的偏压，使得器件的TE模式和TM模式在它们各自的光谱位置一致。 因此，该装置对任何输入光信号的偏振使得不敏感或显示出显着降低的灵敏度。

公开(公告)号：US07474682B2

公开(公告)日：2009-01-06

申请号：US10584091

申请日：2004-12-21

Applicant: Kiminori Mizuuchi ,  Kazuhisa Yamamoto ,  Ken'ichi Kasazumi ,  Isao Kidoguchi

Inventor： Kiminori Mizuuchi ,  Kazuhisa Yamamoto ,  Ken'ichi Kasazumi ,  Isao Kidoguchi

IPC: H01S5/00

CPC classification number: H01S5/0625 ,  H01S5/0287 ,  H01S5/0425 ,  H01S5/0624 ,  H01S5/1064 ,  H01S5/22

Abstract: In a semiconductor laser device (10) having different facet reflectivities, an electrode disposed on a stripe ridge (107a) is divided into four electrode parts (1), (2), (3), and (4), and a larger injection current is injected to an electrode part that is closer to a light emission facet side. Further, a carrier density distribution in an active layer that is opposed to the stripe ridge can be matched to a light intensity distribution in the active layer, thereby preventing degradation in high output characteristic due to destabilization of a transverse mode and reduction in gain which are caused by spatial hole burning.

Abstract translation: 在具有不同面反射率的半导体激光器件（10）中，设置在条纹脊（107a）上的电极被分成四个电极部分（1），（2），（3）和（4） 电流被注入到更靠近发光小面侧的电极部分。 此外，与有源层相对的有源层中的载流子浓度分布可以与有源层中的光强度分布相匹配，从而防止由于横模的不稳定性而导致的高输出特性的劣化和增益的降低 造成空间孔燃烧。