公开(公告)号：US07095551B2

公开(公告)日：2006-08-22

申请号：US11296332

申请日：2005-12-08

申请人： Young-kwang Seo ,  Hyun-chin Kim ,  Hyun-surk Ryu ,  June-koo Rhee ,  Keun-joo Park ,  Chun-ju Youn

发明人： Young-kwang Seo ,  Hyun-chin Kim ,  Hyun-surk Ryu ,  June-koo Rhee ,  Keun-joo Park ,  Chun-ju Youn

IPC分类号： G02F1/365 ,  G02F2/02

CPC分类号： H01S5/50 ,  G02F2/004 ,  G02F2002/006 ,  H01S5/005 ,  H01S5/5027 ,  H01S5/509

摘要： A wavelength converter for generating a wavelength tunable laser optical source in itself is disclosed. The wavelength converter includes a first semiconductor optical amplifier for generating an optical noise, generating and outputting a first optical source by amplifying the generated optical noise if an external current is applied, first and second distributed Bragg reflectors for reflecting only a component of a specified wavelength range among components of the optical noise and applying the reflected component to the first semiconductor optical amplifier, and a second semiconductor optical amplifier for receiving an optical source divided from the optical source reflected by and outputted from the first distributed Bragg reflector and an input data optical source, generating and outputting a second optical source by changing a phase of the divided optical source according to a digital signal from the input data optical source. The first and second optical sources outputted from the first and second semiconductor optical amplifiers are added together, and a signal of which the wavelength is converted through either a constructive interference or a destructive interference of the added first and second optical sources is outputted.

摘要翻译： 本发明公开了一种用于产生波长可调激光光源的波长转换器。 波长转换器包括用于产生光学噪声的第一半导体光放大器，如果施加了外部电流则通过放大产生的光学噪声来产生和输出第一光源;第一和第二分布式布拉格反射器，仅用于仅反射指定波长的分量 光学噪声的分量之间的范围，并将反射分量施加到第一半导体光放大器，以及第二半导体光放大器，用于接收从第一分布式布拉格反射器反射并从其输出的光源划分的光源和输入数据光 源，通过根据来自输入数据光源的数字信号改变分割光源的相位来产生和输出第二光源。 从第一和第二半导体光放大器输出的第一和第二光源相加在一起，并且输出通过相加的第一和第二光源的相长干涉或相消干涉而波长转换的信号。

公开(公告)号：US07042630B2

公开(公告)日：2006-05-09

申请号：US10619434

申请日：2003-07-16

申请人： Alex A. Behfar

发明人： Alex A. Behfar

IPC分类号： G02F1/35 ,  G02F1/365

CPC分类号： H01S5/50 ,  H01S5/101 ,  H01S5/1071 ,  H01S5/1082 ,  H01S5/509

摘要： A ring cavity laser has at least two facets and a mechanism is provided to produce unidirectional propagation and light emission at a first wavelength. A source of laser light at a second wavelength is injected into the cavity to reverse the direction of propagation and to produce emission at the second wavelength.

摘要翻译： 环形腔激光器具有至少两个面，并且提供机构以产生在第一波长处的单向传播和发光。 将第二波长的激光源注入空腔中以反转传播方向并产生第二波长的发射。

公开(公告)号：US20050175354A1

公开(公告)日：2005-08-11

申请号：US10774308

申请日：2004-02-06

申请人： Amarildo Vieira ,  Mani Ramachandran ,  Arthur Paolella

发明人： Amarildo Vieira ,  Mani Ramachandran ,  Arthur Paolella

IPC分类号： H01S5/00 ,  H01S5/50 ,  H04B10/00 ,  H04B10/04 ,  H04B10/28

CPC分类号： H04B10/43 ,  H01S5/005 ,  H01S5/0078 ,  H01S5/5036 ,  H01S5/509

摘要： A method and apparatus for transferring information of an optical information-bearing signal from a first wavelength to a second wavelength. The method is implemented in an all-optical wavelength converter circuit which includes a laser diode in communication with a polarization controller. An information-bearing signal having a first wavelength is input to the circuit. A polarization controller adjusts the polarization of the information-bearing signal. The laser diode receives the polarization-adjusted information-bearing signal and generates a converted information-bearing signal by transferring the information of the polarization-adjusted information-bearing signal from the first wavelength to the second wavelength. The polarization controller receives the converted information-bearing signal from the laser diode, and polarizes the converted information-bearing signal.

摘要翻译： 一种将光信息载体信号从第一波长传送到第二波长的信息的方法和装置。 该方法在包括与偏振控制器通信的激光二极管的全光波长转换器电路中实现。 具有第一波长的信息承载信号被输入到电路。 偏振控制器调节信息载体信号的极化。 激光二极管接收经极化调整的信息承载信号，并通过将偏振调节信息承载信号的信息从第一波长传送到第二波长来产生转换后的信息承载信号。 偏振控制器从激光二极管接收经转换的信息承载信号，并使转换的信息承载信号极化。

公开(公告)号：US20050012982A1

公开(公告)日：2005-01-20

申请号：US10619434

申请日：2003-07-16

申请人： Alex Behfar

发明人： Alex Behfar

IPC分类号： G02F2/02 ,  H01S3/083 ,  H01S5/10 ,  H01S5/50

CPC分类号： H01S5/50 ,  H01S5/101 ,  H01S5/1071 ,  H01S5/1082 ,  H01S5/509

摘要： A ring cavity laser has at least two facets and a mechanism is provided to produce unidirectional propagation and light emission at a first wavelength. A source of laser light at a second wavelength is injected into the cavity to reverse the direction of propagation and to produce emission at the second wavelength.

摘要翻译： 环形腔激光器具有至少两个面，并且提供机构以产生在第一波长处的单向传播和发光。 将第二波长的激光源注入空腔中以反转传播方向并产生第二波长的发射。

公开(公告)号：US06731850B1

公开(公告)日：2004-05-04

申请号：US09988031

申请日：2001-11-16

申请人： Edward H. Sargent

发明人： Edward H. Sargent

IPC分类号： G02B610

CPC分类号： B82Y20/00 ,  G02B6/12004 ,  H01S5/06251 ,  H01S5/06255 ,  H01S5/1057 ,  H01S5/3413 ,  H01S5/3414 ,  H01S5/4087 ,  H01S5/50 ,  H01S5/509

摘要： A photodetector has a spatially varying absorption spectrum formed in a monolithic InGaAsP structure whose quantum well active structure has modified effective bandgap properties. A waveguide couples light to the quantum well active structure. The spatially varying absorption spectrum allows wavelength-division demultiplexing. The effective bandgap properties can be modified by rapid thermal annealing to cause the diffusion of defects from one or two InP defect layers into the quantum well active structure.

摘要翻译： 光电探测器具有在单片InGaAsP结构中形成的空间变化的吸收光谱，其量子阱活性结构具有改进的有效带隙性质。 波导将光耦合到量子阱活性结构。 空间变化的吸收光谱允许波分解复用。 可以通过快速热退火来改变有效的带隙特性，使得缺陷从一个或两个InP缺陷层扩散到量子阱活性结构中。

公开(公告)号：US06608854B1

公开(公告)日：2003-08-19

申请号：US09571384

申请日：2000-05-15

申请人： Shigeki Watanabe

发明人： Shigeki Watanabe

IPC分类号： H01S308

CPC分类号： H04B10/299 ,  H01S5/0608 ,  H01S5/50 ,  H01S5/5063 ,  H01S5/509

摘要： The present invention relates to a method, device, and system for waveform shaping of signal light. The device for waveform shaping of signal light according to the present invention includes a distributed feedback (DFB) laser having a stop band defined as the range of wavelengths allowing laser oscillation, and a drive circuit for supplying a drive current to the DFB laser so that the DFB laser oscillates at a first wavelength included in the stop band. Signal light having a second wavelength not included in the stop band is input into the DFB laser. In the case that the signal light is provided by optical pulses each having a high level and a low level, amplitude fluctuations at the high level of the signal light can be effectively suppressed by suitably setting the power of the signal light.

摘要翻译： 本发明涉及信号光波形整形的方法，装置和系统。 根据本发明的用于信号光波形整形的装置包括具有限定为允许激光振荡的波长范围的阻带的分布反馈（DFB）激光器，以及用于向DFB激光器提供驱动电流的驱动电路，使得 DFB激光器以包含在阻带中的第一波长振荡。 具有不包括在阻带中的第二波长的信号光被输入到DFB激光器中。 在信号光由具有高电平和低电平的光脉冲提供的情况下，可以通过适当地设置信号光的功率来有效地抑制在信号光的高电平处的振幅波动。

公开(公告)号：US20030151796A1

公开(公告)日：2003-08-14

申请号：US10334937

申请日：2002-12-31

发明人： Jong Hoi Kim ,  Kwang Ryong Oh ,  Yong Soon Baek ,  Hyun Soo Kim ,  Kang Ho Kim

IPC分类号： G02F001/35 ,  G02F002/02 ,  G02B006/26

CPC分类号： G02F2/004 ,  G02B6/2813 ,  G02F2001/212 ,  G02F2001/217 ,  H01S5/509

摘要： It is necessary to use the continuous wave (CW) light and the optical input signal in the same direction in order to improve the conversion speed. Furthermore, in order to simplify the configuration of the optical transmission system including wavelength converters, the function capable of separating or removing the optical input signal should be included. Filter-free wavelength converters for separating and rejecting the optical input signal are being developed using the multimode interference semiconductor optical amplifier (MMI-SOA). The gain or phase modulation of the CW light is caused in the MMI-SOA. Furthermore, the CW light and the optical input signal are separated in the MMI-SOA in which the output port depends on the input port. Therefore, no optical filter is required for rejecting the optical input signal, and it is possible to converse to the same wavelength. Owing to filter-free wavelength conversion, the use of a tunable light source is available so that the configuration of the wavelength division multiplexed (WDM) network system can be small-sized and variably employed, thereby the performance and the capacity of optical communication system can be improved.

摘要翻译： 为了提高转换速度，必须在相同方向上使用连续波（CW）光和光输入信号。 此外，为了简化包括波长转换器的光传输系统的结构，可以包括能够分离或去除光输入信号的功能。 正在使用多模干涉半导体光放大器（MMI-SOA）开发用于分离和抑制光输入信号的无滤波器波长转换器。 CW光的增益或相位调制是在MMI-SOA中引起的。 此外，在输出端口取决于输入端口的MMI-SOA中，CW光和光输入信号被分离。 因此，不需要滤光器来拒绝光输入信号，并且可以与相同的波长相交。 由于无滤波器的波长转换，可使用可调谐光源可以使得波分复用（WDM）网络系统的配置可以小型化和可变地使用，从而光通信系统的性能和容量 可以改进。

公开(公告)号：US20020171920A1

公开(公告)日：2002-11-21

申请号：US10004804

申请日：2001-12-07

申请人： Fujitsu Limited

发明人： Mitsuru Sugawara

IPC分类号： H01S003/00

CPC分类号： B82Y20/00 ,  B82Y10/00 ,  H01L29/127 ,  H01S5/3412 ,  H01S5/50 ,  H01S5/509

摘要： Carriers are injected into a plurality of quantum dots by applying a bias voltage to a semiconductor region of a semiconductor optical amplifier, the plurality of quantum dots for three-dimensionally confining carriers being distributed in the semiconductor region. An optical pulse signal at a bit rate of 2 Gb/s or higher is input to the semiconductor optical amplifier which amplifies the input optical pulse signal by generating induced emission by optical transition of the carriers in the quantum dots. An optical signal processing method capable of high speed and stable operation is provided.

摘要翻译： 通过向半导体光放大器的半导体区域施加偏置电压将载流子注入到多个量子点中，用于三维限制载流子的多个量子点分布在半导体区域中。 以2Gb / s以上的比特率的光脉冲信号被输入到半导体光放大器，其通过在量子点中通过载流子的光跃迁产生感应发射来放大输入光脉冲信号。 提供了一种能够高速稳定运行的光信号处理方法。

公开(公告)号：US20020075558A1

公开(公告)日：2002-06-20

申请号：US09756756

申请日：2001-01-10

发明人： Dong Hwan Kim ,  Kyung Sun Choi ,  Jae Cheol Jo ,  Sang Bae Lee ,  Jung Young Son

IPC分类号： G02F001/365

CPC分类号： G02F2/004 ,  G02F1/3536 ,  G02F2002/006 ,  G02F2201/02 ,  G02F2201/17 ,  H01S5/509

摘要： The present invention relates to a wavelength converter apparatus for ultra-high speed optical signal process. So, the present invention (a)embodies a wavelength converter which does not need an outer pump light by composing a semiconductor optical amplifier-ring type laser and (b)provides a wavelength converter apparatus for ultra-high speed optical signal process which embodies to be always operated wavelength conversion to be always possible within the amplifying bandwidth(about 40 mm) of SOA by a wavelength-tunable optical band pass filter deposited in a laser resonator. Therefore, the present invention (a)does not need the external pump light because converted wavelength is tuned within the amplifying bandwidth of SOA, and the own laser oscillation wavelength is used as a pump light, (b)can be used as an original WDM optical wavelength converter because the present invention can be used in the range 1.55 um, and (c) can be used not only as an ultra-high speed optical communication element of next generation(such as ultra-high speed all-optical wavelength converter over 10 Gbps) but also as an optical switch element (such as an optical signal connector) because the reaction speed of SOA which is used as a wavelength converter is up to sub-pico second and the wavelength conversion is possible up to the speed terra bit per a second.

摘要翻译： 本发明涉及一种用于超高速光信号处理的波长转换装置。 因此，本发明（a）体现了通过组合半导体光放大环型激光器而不需要外部泵浦光的波长转换器，（b）提供了一种用于超高速光信号处理的波长转换装置， 通过沉积在激光谐振器中的波长可调光学带通滤波器，始终可以在SOA的放大带宽（约40mm）内始终进行波长转换。 因此，本发明（a）由于转换波长在SOA的放大带宽内调谐而不需要外部泵浦光，并且使用自身的激光振荡波长作为泵浦光，（b）可以用作原始WDM 因为本发明可以在1.55μm的范围内使用，（c）不仅可以用作下一代的超高速光通信元件（例如超高速全光波长转换器 10 Gbps），而且作为光开关元件（如光信号连接器），因为用作波长转换器的SOA的反应速度高达亚微秒，波长转换可能达到速度比特率 每秒

公开(公告)号：US5889902A

公开(公告)日：1999-03-30

申请号：US800949

申请日：1997-02-14

申请人： Gert Laube ,  Michael Schilling ,  Klaus Wunstel ,  Wilfried Idler ,  Karin Grosskopf ,  Eugen Lach

发明人： Gert Laube ,  Michael Schilling ,  Klaus Wunstel ,  Wilfried Idler ,  Karin Grosskopf ,  Eugen Lach

IPC分类号： G02F1/017 ,  G02F1/313 ,  G02F2/00 ,  H01L27/15 ,  H01S3/10 ,  H01S5/026 ,  H01S5/227 ,  H01S5/34 ,  H01S5/40 ,  H01S5/50 ,  G02B6/12 ,  H01L21/70

CPC分类号： B82Y20/00 ,  G02F1/3138 ,  H01S5/5009 ,  G02F1/01708 ,  G02F2002/006 ,  H01S5/026 ,  H01S5/2272 ,  H01S5/3406 ,  H01S5/4068 ,  H01S5/509

摘要： An integrated optoelectronic semiconductor component is presented, which can equally process light signals of any polarization direction. Such semiconductor components are used for digital optical telecommunications. The semiconductor component has active (A) and passive (B) waveguide sections, which comprise a number of semiconductor layers (SP) with so-called multiple quantum well structures. The semiconductor layers (SP) are deposited by a process known as selective area growth (SAG). A portion of the semiconductor layers has a lattice constant which is smaller than the lattice constant of a substrate (SUB). This creates a biaxial tensile strain in these layers. The tensile strain is optimized in the active waveguide sections (A) to attain polarization independence. Furthermore a process is described whereby such a semiconductor component can be manufactured.

摘要翻译： 提出了一种集成的光电子半导体元件，可以同时处理任何偏振方向的光信号。 这种半导体元件用于数字光通信。 半导体部件具有有源（A）和无源（B）波导部分，其包括具有所谓的多量子阱结构的多个半导体层（SP）。 通过称为选择面积生长（SAG）的工艺沉积半导体层（SP）。 半导体层的一部分具有小于衬底（SUB）的晶格常数的晶格常数。 这在这些层中产生双轴拉伸应变。 在有源波导部分（A）中优化拉伸应变以获得极化独立性。 此外，描述了可以制造这样的半导体部件的工艺。