公开(公告)号：US06560247B2

公开(公告)日：2003-05-06

申请号：US09993027

申请日：2001-11-05

Applicant: Do-Il Chang ,  Min-Yong Jeon ,  Kyong-Hon Kim

Inventor： Do-Il Chang ,  Min-Yong Jeon ,  Kyong-Hon Kim

IPC: H01S330

CPC classification number: H01S3/06754 ,  H01S3/0809 ,  H01S3/302

Abstract: A dual wavelength optical fiber laser includes a first and a second optical fibers which generating stimulated scattering by a pump light source; two short period optical fiber gratings that is resonating each of a first and a second wavelength light which are generated by the optical fibers and regulating reflecting characteristics according to the first and the second wavelengths; a WDM optical fiber coupler which inputs a pump wavelength to the optical fibers and outputs a laser operation wavelength; and an interference removing unit which is connected between the optical fibers and removes an interference in the first and the second wavelength of resonating.

公开(公告)号：US08380069B2

公开(公告)日：2013-02-19

申请号：US12909721

申请日：2010-10-21

Applicant: Wayne S. Pelouch ,  Do-Il Chang

Inventor： Wayne S. Pelouch ,  Do-Il Chang

IPC: H04J14/02

CPC classification number: H04B10/2513 ,  H04B10/61 ,  H04B10/66

Abstract: The mixing of coherent optical wavelength channels with non-coherent optical wavelength channels. Before mixing, a dispersive element introduces dispersion into the coherent optical wavelength channels and/or into the non-coherent optical wavelength channels such that the dispersion map of the coherent optical wavelength channels is different than the dispersion map of the non-coherent optical wavelength channels. By allowing the coherent channels to have a different dispersion map, the dispersion map may be moved further from the zero dispersion point, which can degrade coherent detection. Accordingly, coherent optical channels and non-coherent optical channels may be transmitted effectively over the same optical link.

Abstract translation: 相干光波长通道与非相干光波长通道的混合。 在混合之前，色散元件将相干光波长通道中的色散和/或非相干光波长通道引入色散，使得相干光波长通道的色散图与非相干光波长通道的色散图不同 。 通过允许相干通道具有不同的色散图，色散图可以从零色散点进一步移动，这可以降低相干检测。 因此，相干光信道和非相干光信道可以在相同的光链路上有效传输。

公开(公告)号：US08380068B2

公开(公告)日：2013-02-19

申请号：US12895585

申请日：2010-09-30

Applicant: Do-Il Chang ,  Wayne S. Pelouch

Inventor： Do-Il Chang ,  Wayne S. Pelouch

IPC: H04J14/02 ,  H04B10/12

CPC classification number: H04B10/2513 ,  H04B10/61 ,  H04B10/66

Abstract: An optical assembly in an optical link coupling two optical terminals. The optical assembly receives and demultiplexes two groups of optical wavelength channels which are each treated separately as far as dispersion compensation and discrete amplification are concerned. The optical assembly then multiplexes the two groups back into the same fiber for further transmission. For instance, one group of optical wavelength channels may each be coherent channels, and subject to no dispersion in the optical assembly, while the other group may contain non-coherent channels, which are subject to dispersion compensation in the optical assembly.

Abstract translation: 耦合两个光学终端的光学链路中的光学组件。 光学组件接收和解复用两组光波长通道，每组光波长通道分别对分散补偿和离散放大进行处理。 光学组件然后将两组复用回相同的光纤进行进一步传输。 例如，一组光波长通道可以各自是相干通道，并且不会在光学组件中产生色散，而另一组光束可能包含在光学组件中进行色散补偿的非相干通道。

公开(公告)号：US08111453B2

公开(公告)日：2012-02-07

申请号：US12371489

申请日：2009-02-13

Applicant: Wayne S. Pelouch ,  Do-Il Chang

Inventor： Wayne S. Pelouch ,  Do-Il Chang

IPC: H01S3/00

CPC classification number: H04J14/0221 ,  H04B10/2916 ,  H04B10/2918 ,  H04B10/2935 ,  H04J14/0279

Abstract: A submarine optical repeater that shares optical pump power in multiple gain stages such that approximately the same wavelengths of optical pump is provided to each of the gain stages. Also, tilt control mechanism may adjust gain dependency on wavelength by adjusting the amount of optical pump power delivered to the optical gain stages. Residual optical pump power from both forward and backward Raman amplification may be used to power corresponding optically pumped amplifiers.

Abstract translation: 一种海底光中继器，其在多个增益级中共享光泵浦功率，使得大致相同的光泵浦波长提供给每个增益级。 此外，倾斜控制机构可以通过调节传递到光学增益级的光泵浦功率的量来调节对波长的增益依赖性。 来自正向和反向拉曼放大的残余光泵功率可用于为相应的光泵浦放大器供电。

公开(公告)号：US08145062B2

公开(公告)日：2012-03-27

申请号：US12350071

申请日：2009-01-07

Applicant: Wayne S. Pelouch ,  Do-Il Chang ,  Herve A. Fevrier

Inventor： Wayne S. Pelouch ,  Do-Il Chang ,  Herve A. Fevrier

IPC: H04B10/12

CPC classification number: H01S3/06754 ,  H01S3/094011 ,  H01S3/094042 ,  H01S3/094076 ,  H01S3/094096 ,  H01S3/0941 ,  H01S3/302

Abstract: Optical amplification by combining two or more optical signals from separate optical fibers, amplifying the combined signal using an optical fiber, and separating the amplified signals into their constituent optical signals. The separated optical signals may then be sent further in the direction they had been heading before combination. This allows multiple optical signals to be amplified using a single optical amplifier, perhaps even in a single optical fiber. Although not required, the two optical signals may even be travelling in different directions.

Abstract translation: 通过组合来自分离光纤的两个或更多个光信号进行光放大，使用光纤放大组合信号，并将放大的信号分离成其组成的光信号。 然后可以在组合之前沿着它们前进的方向进一步发送分离的光信号。 这允许使用单个光学放大器（也许甚至在单个光纤中）来放大多个光信号。 虽然不需要，但是两个光信号甚至可以在不同的方向上行进。

公开(公告)号：US20100209117A1

公开(公告)日：2010-08-19

申请号：US12371484

申请日：2009-02-13

Applicant: Do-Il Chang ,  Wayne S. Pelouch

Inventor： Do-Il Chang ,  Wayne S. Pelouch

IPC: H04B10/00 ,  H01S3/30 ,  H01S3/16

CPC classification number: H04B10/2916 ,  H01S3/06758 ,  H01S3/094003 ,  H01S3/094061 ,  H01S3/09415 ,  H01S3/1608 ,  H01S3/2375 ,  H01S3/302 ,  H01S2301/04 ,  H04B10/2935

Abstract: Cross-distribution of the output pump power from optical pump units amongst multiple amplifier gain stages even in a single direction of an optical link in an optical communications system. For example, an optical pump unit may output optical pump power that is shared amongst a discrete optical amplification unit and a distributed optical amplification unit (such as a forward and/or backward Raman amplifier). Such sharing has the potential to increase reliability and/or efficiency of the optical communications system.

Abstract translation: 即使在光通信系统中的光链路的单个方向上，也可以在多个放大器增益级之间从光泵单元输出泵浦功率的交叉分配。 例如，光泵单元可以输出在分立光放大单元和分布式光放大单元（例如前向和/或向后拉曼放大器）之间共享的光泵功率。 这种共享有可能提高光通信系统的可靠性和/或效率。

公开(公告)号：US20090174933A1

公开(公告)日：2009-07-09

申请号：US12350070

申请日：2009-01-07

Applicant: Do-Il Chang ,  Wayne S. Pelouch ,  Herve A. Fevrier

Inventor： Do-Il Chang ,  Wayne S. Pelouch ,  Herve A. Fevrier

IPC: H01S3/091

CPC classification number: H01S3/06754 ,  H01S3/094011 ,  H01S3/094042 ,  H01S3/094076 ,  H01S3/094096 ,  H01S3/0941 ,  H01S3/302

Abstract: An optical amplification mechanism that introduces optical pump(s) into one port of an optical circulator. The optical circulator directs the optical pumps from that port into another port that is coupled to the output of a gain stage. The optical pump(s) then pass from the output to the input of the gain stage while amplifying an optical signal passing from the input to the output of the gain stage. A residual amount of optical pump(s) that exits the input of the gain stage is reflected back into the input of the gain stage. The reflected optical pump(s) then further assists in the amplification of the optical signal. Other embodiments are also disclosed.

Abstract translation: 将光泵引入光循环器的一个端口的光放大机构。 光循环器将光泵从该端口引导到另一个与增益级的输出端相连的端口。 然后，光泵从输出传递到增益级的输入，同时放大从输入到增益级的输出的光信号。 离开增益级的输入端的光泵的剩余量被反射回增益级的输入端。 反射光泵然后进一步有助于光信号的放大。 还公开了其他实施例。

公开(公告)号：US08233216B2

公开(公告)日：2012-07-31

申请号：US12350067

申请日：2009-01-07

Applicant: Do-Il Chang ,  Wayne S. Pelouch ,  Herve A. Fevrier

Inventor： Do-Il Chang ,  Wayne S. Pelouch ,  Herve A. Fevrier

IPC: H04B10/17 ,  H01S3/30 ,  H04B10/12

CPC classification number: H01S3/06754 ,  H01S3/094011 ,  H01S3/094042 ,  H01S3/094076 ,  H01S3/094096 ,  H01S3/0941 ,  H01S3/302

Abstract: The alteration of the bandwidth of an optical amplifier. Before alteration, optical signals having a first set of wavelengths are provided through a gain medium of the optical amplifier. In addition, a first pump having a set of pump wavelengths is propagated through the gain medium to thereby amplify the optical signals. After alteration, optical signals having at least a partially different set of wavelengths are able to be optically amplified by coupling a second pump into the optical medium. The second pump is at least partially distinct from the first pump in that the second pump includes at least one pump wavelength that was not included in the first pump.

Abstract translation: 光放大器带宽的改变。 在改变之前，具有第一组波长的光信号通过光放大器的增益介质提供。 此外，具有一组泵浦波长的第一泵通过增益介质传播，从而放大光信号。 在改变之后，具有至少部分不同波长组合的光信号能够通过将第二泵耦合到光介质中被光学放大。 第二泵至少部分地不同于第一泵，因为第二泵包括不包括在第一泵中的至少一个泵浦波长。

公开(公告)号：US07869673B2

公开(公告)日：2011-01-11

申请号：US12202100

申请日：2008-08-29

Applicant: Do-Il Chang ,  Andrej B. Puc

Inventor： Do-Il Chang ,  Andrej B. Puc

IPC: G02B6/28 ,  H01S3/00

CPC classification number: H04B10/2543 ,  G02B6/02019 ,  H04B10/2916

Abstract: Embodiments described herein relate to an optical fiber stretch that may experience forward Raman amplification in which the peak optical signal power occurs at some distance from the transmitter. Smaller effective area optical fiber is used at a portion of the optical fiber stretch in which the optical signal power is increasing, while larger effective area optical fiber is used at a more remote stretch of the optical fiber stretch that experiences the peak optical signal power. Thus, the quality of the signal is better preserved since the larger effective area fiber reduces maximum optical signal density thereby reducing non-linear degradations on signal quality.

Abstract translation: 本文所描述的实施例涉及可以经历向前拉曼放大的光纤拉伸，其中峰值光信号功率在距发射机一定距离处发生。 在光信号功率增加的部分光纤拉伸中使用较小的有效面积的光纤，而在经受峰值光信号功率的光纤拉伸的更远的拉伸处使用更大的有效面积的光纤。 因此，由于较大的有效面积的光纤降低了最大的光信号密度，从而降低信号质量的非线性劣化，从而更好地保持信号的质量。

公开(公告)号：US20100103957A1

公开(公告)日：2010-04-29

申请号：US12508416

申请日：2009-07-23

Applicant: Herve A. Fevrier ,  Andrej B. Puc ,  Do-Il Chang ,  Andrzej S. Kaminski

Inventor： Herve A. Fevrier ,  Andrej B. Puc ,  Do-Il Chang ,  Andrzej S. Kaminski

IPC: H01S3/30

Abstract: An optical communication system includes a gain medium that receives optical signal(s) of one or more optical signal wavelengths. The system also includes pump source(s) that are capable of generating at least a first pump signal and a second pump signal. The first pump signal includes at least one integer Raman order wavelength that includes a Raman gain peak that is one stokes shift away from at least one of the one or more optical signal wavelengths. The second pump signal includes at least one fractional Raman order pump wavelength that includes a Raman gain peak that is a non-integer multiple of a stokes shift from each of the one or more optical signal wavelengths. Optionally, there might be one or more other pump signals that do not satisfy the criteria specified for the first pump signal or the second pump signal.

Abstract translation: 光通信系统包括接收一个或多个光信号波长的光信号的增益介质。 该系统还包括能够产生至少第一泵信号和第二泵信号的泵浦源。 第一泵浦信号包括至少一个整数拉曼阶波长，其包括远离一个或多个光信号波长中的至少一个的一个斯托克斯偏移的拉曼增益峰值。 第二泵浦信号包括至少一个分数拉曼级泵浦波长，其包括拉曼增益峰值，拉曼增益峰值是来自一个或多个光信号波长中的每一个的斯托克斯偏移的非整数倍。 可选地，可能存在不满足为第一泵浦信号或第二泵浦信号指定的标准的一个或多个其它泵浦信号。