公开(公告)号：US07773295B2

公开(公告)日：2010-08-10

申请号：US12408974

申请日：2009-03-23

申请人： Motoki Kakui ,  Jun Kinugasa

发明人： Motoki Kakui ,  Jun Kinugasa

IPC分类号： H04B10/17 ,  H04B10/12

CPC分类号： H01S3/06758 ,  H01S3/06716 ,  H01S3/06766 ,  H01S3/06775 ,  H01S3/10007 ,  H01S3/1608 ,  H01S3/1616 ,  H01S2301/02 ,  H01S2301/04

摘要： The present invention relates to an optical amplifier and the like having a flatter gain spectrum in the wavelength band of 1490 nm to 1520 nm than before. The optical amplifier according to the present invention comprises an Er-doped optical waveguide and a Tm-doped optical waveguide having gain spectra difference from each other in the wavelength band. The signal light entered through the input end is first amplified by the Er-doped optical waveguide, and thereafter is amplified by the Tm-doped optical waveguide. The gain deviation of the amplified signal light, which has been amplified in the Er- and Tm-doped optical waveguides and outputted through the output end, can be reduced over the wavelength band.

摘要翻译： 本发明涉及在以前的1490nm至1520nm的波长带内具有较平坦增益谱的光放大器等。 根据本发明的光放大器包括Er掺杂光波导和在波长带中具有彼此增益谱差的Tm掺杂光波导。 通过输入端进入的信号光首先被掺铒光波导放大，之后由掺杂Tm的光波导放大。 在Er-和Tm掺杂的光波导中被放大并通过输出端输出的放大的信号光的增益偏差可以在波长带上减小。

公开(公告)号：US07733561B2

公开(公告)日：2010-06-08

申请号：US11169998

申请日：2005-06-28

申请人： Marc Mermelstein ,  Andrew D. Yablon

发明人： Marc Mermelstein ,  Andrew D. Yablon

IPC分类号： H04B10/17 ,  G02B6/00

CPC分类号： H01S3/06758 ,  H01S3/07 ,  H01S3/09415 ,  H01S2301/02 ,  H01S2301/03

摘要： A fiber amplifier suitable for high power, narrow linewidth applications exhibits suppression of stimulated Brillouin scattering (SBS) by segmenting the fiber amplifier into separate portions that exhibit different Brillouin center frequencies. By changing the center frequencies in adjoining segments of the fiber amplifier, the backward-propagating Stokes signal is essentially blocked, and SBS is suppressed. In a preferred embodiment the segmentation is added to the terminating portion of the fiber amplifier. Various techniques, including temperature modifications, can be used to impart the desired center frequency shift.

摘要翻译： 适用于高功率，窄线宽应用的光纤放大器通过将光纤放大器分割成具有不同布里渊中心频率的分离部分来抑制受激布里渊散射（SBS）。 通过改变光纤放大器相邻段的中心频率，反向传播的斯托克斯信号基本上被阻塞，并且抑制了SBS。 在优选实施例中，分割被添加到光纤放大器的终止部分。 可以使用包括温度改变在内的各种技术来赋予期望的中心频率偏移。

公开(公告)号：US07724354B2

公开(公告)日：2010-05-25

申请号：US11578585

申请日：2005-09-30

申请人： Ulrich Drodofsky ,  Marcel Zeller

发明人： Ulrich Drodofsky ,  Marcel Zeller

IPC分类号： H04B10/17 ,  G01C3/04

CPC分类号： H01S3/06754 ,  G01S7/4814 ,  G01S7/4818 ,  G01S7/484 ,  G01S7/499 ,  G01S17/10 ,  H01S3/005 ,  H01S3/0078 ,  H01S3/094076 ,  H01S3/09415 ,  H01S3/1302 ,  H01S3/1305 ,  H01S5/0612 ,  H01S2301/02

摘要： A laser-system comprises master-oscillator/power-amplifier (51) whereby the master-oscillator comprises a pulsed diode (3) and a pumped active optical fiber power-amplifier (9). Substantially all guides of laser light (5, 9, 31, 29, 33, 25, 35, 39, 45) are optical fibers. The pulsed diode (3) is not temperature stabilized. To reduce nevertheless amplified spontaneous emission generated in the optical fiber amplifier (9), a narrow band-pass filter unit (29) is used. Filter unit (29) has a central wavelength with a temperature dependence which is matched to the temperature dependent wavelength shift of the pulsed diode (3).

摘要翻译： 激光系统包括主振荡器/功率放大器（51），由此主振荡器包括脉冲二极管（3）和泵浦有源光纤功率放大器（9）。 基本上所有的激光导向（5,9,31,29,33,25,35,39,45）都是光纤。 脉冲二极管（3）不是温度稳定的。 为了减少在光纤放大器（9）中产生的放大的自发发射，使用窄带通滤波器单元（29）。 滤波器单元（29）具有与脉冲二极管（3）的温度相关波长偏移匹配的温度依赖性的中心波长。

公开(公告)号：US07715092B2

公开(公告)日：2010-05-11

申请号：US11863905

申请日：2007-09-28

申请人： Maxim Bolshtyansky ,  Nicholas King

发明人： Maxim Bolshtyansky ,  Nicholas King

IPC分类号： H04B10/17 ,  H04B10/12

CPC分类号： H04J14/0221 ,  H04B10/296

摘要： Raman tilt is induced by the propagation of optical signals in optical communication fibers during and after transient events. Certain characteristics of the light are monitored at each amplification node and Raman tilt correction is achieved by spectral tilt control optics. The light is monitored either as total power, and/or the power of light after passing through one or more optical filters. In the case of EDFA (Erbium Doped Fiber Amplifier) the correction is performed by adjusting stage gains and VOA loss distribution within the amplifier. The light detection is relatively fast, whereby the tilt is compensated by fast controlled VOA and pump power adjustment during a transient event.

摘要翻译： 在瞬态事件期间和之后，光通信光纤中光信号的传播引起拉曼倾斜。 在每个放大节点监测光的某些特性，并通过光谱倾斜控制光学器件实现拉曼倾斜校正。 光通过一个或多个光学滤光器作为总功率和/或光的功率被监视。 在EDFA（掺铒光纤放大器）的情况下，通过调节放大器内的级增益和VOA损耗分布来执行校正。 光检测相对较快，由此在瞬态事件期间通过快速控制的VOA和泵浦功率调整来补偿倾斜。

公开(公告)号：US07710639B2

公开(公告)日：2010-05-04

申请号：US11637262

申请日：2006-12-12

申请人： William Bryan Cottingame ,  Robert Rex Rice ,  Martin Richard Flannery

发明人： William Bryan Cottingame ,  Robert Rex Rice ,  Martin Richard Flannery

IPC分类号： H04B10/17 ,  H01S3/00

CPC分类号： G01S7/4814 ,  G01S7/484 ,  G01S17/89

摘要： A system and method is provided for uniform illumination of a target area. In one embodiment, the system comprises a plurality of mutually incoherent light sources configured to generate respective light beams with different wavelengths, and transmitting optics configured to transmit the light beams with different wavelengths in a non-overlapping wavelength light beam pattern over the target area, such that there are no overlap regions of the target area illuminated by a light beam from the same light source.

摘要翻译： 提供了用于目标区域的均匀照明的系统和方法。 在一个实施例中，该系统包括被配置为产生具有不同波长的相应光束的多个相互非相干光源，以及被配置为以不重叠的波长光束图案的不同波长的目标区域传输的光学透镜， 使得没有来自相同光源的光束照射的目标区域的重叠区域。

公开(公告)号：US20100067100A1

公开(公告)日：2010-03-18

申请号：US12422758

申请日：2009-04-13

申请人： Kazunori Shiota ,  Shin Masuda ,  Masataka Nakazawa ,  Masato Yoshida

发明人： Kazunori Shiota ,  Shin Masuda ,  Masataka Nakazawa ,  Masato Yoshida

IPC分类号： H04B10/17 ,  H01S3/00

CPC分类号： H01S3/06791 ,  H01S3/0675 ,  H01S3/08 ,  H01S3/094042 ,  H01S3/1109 ,  H01S3/1118

摘要： A laser oscillator includes a ring resonator. The ring resonator includes an optical circulator having first, second, third, and fourth ports and a first optical amplification fiber connected to the optical circulator. Light incident on the first port is exited from the second port, and light incident on the second port is exited from the third port. The fourth port provides an exciting light and injects the exciting light into the ring resonator through the first port. The first optical amplification fiber amplifies light exited from the third port with the exciting light provided by the fourth port. The laser oscillator also includes an optical member connected to the optical circulator. The optical member reflects at least a part of the light exited from the second port and injects the same into the second port again.

摘要翻译： 激光振荡器包括环形谐振器。 环形谐振器包括具有第一，第二，第三和第四端口的光循环器和连接到光循环器的第一光放大光纤。 第一个港口的光线从第二个港口出发，第二个港口的光线从第三个港口出来。 第四个端口提供激发光，并通过第一个端口将激发光注入环形谐振器。 第一光放大光纤利用由第四端口提供的激发光放大从第三端口退出的光。 激光振荡器还包括连接到光循环器的光学构件。 光学构件反射从第二端口退出的光的至少一部分，并再次将其注入第二端口。

公开(公告)号：US07583432B2

公开(公告)日：2009-09-01

申请号：US10542296

申请日：2003-12-23

申请人： Pierpaolo Ghiggino ,  Francesco Poletti ,  Giovanni Razzetta ,  Piergiorgio Sessarego

发明人： Pierpaolo Ghiggino ,  Francesco Poletti ,  Giovanni Razzetta ,  Piergiorgio Sessarego

IPC分类号： H04B10/17 ,  H04B10/12

CPC分类号： H04B10/291 ,  H04J14/0201 ,  H04J14/0221 ,  H04J14/0283

摘要： A ringed optical transmission system comprises along the ring rare earth doped fiber amplifiers. The system has a gain peak with a λASE wavelength outside the λ1-λn band of the channels transmitted along the ring, the wavelength corresponding to an ASE emission peak of the amplifiers in the ring. In this manner a lasing peak forming a gain stabilization signal is produced.

摘要翻译： 环形光传输系统包括沿着环的稀土掺杂光纤放大器。 该系统具有在沿着环传输的通道的λ1-lambdan带外的λASE波长的增益峰，该波长对应于环中的放大器的ASE发射峰。 以这种方式产生形成增益稳定信号的激光峰。

公开(公告)号：US07561325B2

公开(公告)日：2009-07-14

申请号：US12003233

申请日：2007-12-20

申请人： Shinobu Tamaoki

发明人： Shinobu Tamaoki

IPC分类号： H04B10/17 ,  H04B10/12

CPC分类号： H01S3/06754 ,  H01S3/0014 ,  H01S3/06708 ,  H01S3/094011 ,  H01S3/10015 ,  H01S3/1301

摘要： The present invention relates to an optical module that has a structure for protecting a pumping light source at a low cost. The optical module comprises an amplification optical fiber, an optical coupler, a pumping light source, a delay optical fiber, a seed light source, an optical fiber, a photodetector, an optical fiber, an optical isolator, an optical isolator, and a control section. Through the insertion of the delay optical fiber between the pumping light source and the optical coupler, the timing of the output control of the pumping light source which is carried out after the photodetector detects return light leads the timing with which the return light enters the pumping light source. Hence, the time with which the return light enters the pumping light source is shortened and the accumulative damage time of the pumping light source is reduced.

摘要翻译： 本发明涉及具有以低成本保护泵浦光源的结构的光学模块。 光学模块包括放大光纤，光耦合器，泵浦光源，延迟光纤，种子光源，光纤，光电检测器，光纤，光隔离器，光隔离器和控制器 部分。 通过在泵浦光源和光耦合器之间插入延迟光纤，在光电检测器检测到返回光之后执行的泵浦光源的输出控制的定时导致返回光进入泵浦的定时 光源。 因此，返回光进入泵浦光源的时间缩短，并且减少了泵浦光源的累积损坏时间。

公开(公告)号：US07554720B2

公开(公告)日：2009-06-30

申请号：US11407170

申请日：2006-04-20

申请人： Yuki Murakami ,  Hideaki Sugiya ,  Akira Yamamoto

发明人： Yuki Murakami ,  Hideaki Sugiya ,  Akira Yamamoto

IPC分类号： H04B10/17 ,  H04B10/12

CPC分类号： H04B10/0797

摘要： A transmission apparatus designed to be capable of monitoring faults which occur between the input stage of an optical multiplexer and the input stage of an optical amplifier, appropriately switching between automatic gain control and automatic level control, and outputting signal lights with appropriate optical power, without using a spectrum analyzer. The optical multiplexer combines the wavelengths of a plurality of signal lights. The optical amplifier is connected at the latter stage of the optical multiplexer, and operates in the automatic gain control mode or in the automatic level control mode, the automatic gain control mode maintaining a constant gain for wavelength-multiplexed signal light, the automatic level control mode maintaining constant output power for the wavelength-multiplexed signal light. A mode selector selects the automatic gain control mode or the automatic level control mode for the optical amplifier based on the total optical power of the plurality of signal lights to be input to the optical multiplexer and the optical power of the wavelength-multiplexed signal light to be input to the optical amplifier.

摘要翻译： 一种发送装置，被设计为能够监视在光复用器的输入级与光放大器的输入级之间出现的故障，适当地切换自动增益控制和自动电平控制，并以适当的光功率输出信号灯，而不需要 使用频谱分析仪。 光复用器组合多个信号光的波长。 光放大器在光复用器的后级连接，以自动增益控制模式或自动电平控制模式工作，自动增益控制模式保持波长复用信号光的恒定增益，自动电平控制 模式保持波长复用信号光的恒定输出功率。 模式选择器基于要输入到光复用器的多个信号光的总光功率和波分复用信号光的光功率，选择光放大器的自动增益控制模式或自动电平控制模式 输入到光放大器。

公开(公告)号：US07554719B2

公开(公告)日：2009-06-30

申请号：US11858501

申请日：2007-09-20

申请人： Xiang Zhou ,  Martin Birk

发明人： Xiang Zhou ,  Martin Birk

IPC分类号： H04B10/17 ,  H04B10/12

CPC分类号： H01S3/302 ,  H01S3/06754 ,  H01S3/094096 ,  H01S3/10015 ,  H01S2301/04 ,  H04B10/2916 ,  H04B10/296

摘要： The present invention provides methods and apparatuses for controlling a gain of an optical fiber amplifier. Gain circuitry operates in an opened loop configuration and uses a predetermined function relating a power variation of at least one wavelength region with a pump power adjustment for at least one optical pump. Two approximate linear relationships between the input signal power variations and the required pump power adjustments are utilized in controlling the Raman fiber amplifier. Each approximate linear relationship includes at least one linear coefficient that relates a power variation for a specific wavelength region and a power adjustment of a specific Raman pump. The dynamic gain control technique is applicable to an Erbium-doped fiber/waveguide amplifier. Also, a dynamic gain control technique controls a backward-pumped Raman amplifier, in which the power variation is determined at one geographical location and the optical pumps are controlled at another geographical location.

摘要翻译： 本发明提供了用于控制光纤放大器的增益的方法和装置。 增益电路以开环配置工作，并且使用将至少一个波长区域的功率变化与用于至少一个光泵的泵功率调整相关联的预定功能。 输入信号功率变化与所需泵浦功率调整之间的两个近似线性关系用于控制拉曼光纤放大器。 每个近似线性关系包括至少一个线性系数，其涉及特定波长区域的功率变化和特定拉曼泵的功率调整。 动态增益控制技术适用于掺铒光纤/波导放大器。 此外，动态增益控制技术控制反向泵浦拉曼放大器，其中在一个地理位置确定功率变化，并且将光泵控制在另一地理位置。