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1. 发明申请

US20150188276A1 MULTIPLEXER HAVING ASE SUPPRESSION 有权
标题翻译：具有ASE抑制功能的多路复用器
公开(公告)号：US20150188276A1
公开(公告)日：2015-07-02
申请号：US14145768
申请日：2013-12-31
申请人： Matthew L. Mitchell , Zhong Pan , Michael F. Van Leeuwen
发明人： Matthew L. Mitchell , Zhong Pan , Michael F. Van Leeuwen
IPC分类号： H01S3/00 , H01S3/067
CPC分类号： H04J14/0201 , H04B10/506 , H04J14/0212
摘要： Consistent with the present disclosure, optical filters are provided in a reconfigurable optical add-drop multiplexer (ROADM). In one example, groups of optical signals are amplified by corresponding erbium-doped fiber amplifiers (EDFAs) and supplied to each optical filter, which has a passband that includes the wavelengths associated with the received optical signal group. Light at wavelengths outside the passband of each optical filter, such as amplified stimulated emission (ASE) light generated by a respective EDFA, is significantly attenuated. Each optical signal group, after such amplification and filtering may then be switched and combined in a multicast switch before being directed toward a desired optical communication path. When, for example, first and second optical signal groups are combined, however, the first optical signal group is accompanied by little or no ASE light at the second optical signal group wavelengths. In addition, the second optical signal group is not accompanied by significant ASE light at the first optical signal group wavelengths. Accordingly, the first and second optical signal groups have less noise than would otherwise be present in the absence of the optical filters, and bit error rates associated with the optical signal groups are reduced.
摘要翻译：根据本公开，光学滤波器被提供在可重新配置的光分插复用器（ROADM）中。在一个示例中，光信号组由相应的掺铒光纤放大器（EDFA）放大并提供给每个滤光器，每个滤光器具有包含与所接收的光信号组相关联的波长的通带。每个滤光器的通带外的波长处的光，例如由相应EDFA产生的放大的受激发射（ASE）光的光被显着衰减。在这样的放大和滤波之后，每个光信号组然后可以在指向所需的光通信路径之前在多播交换机中进行切换和组合。然而，当例如第一和第二光学信号组合时，第二光学信号组在第二个光学信号组波长处伴随很少或没有ASE光。此外，第二光信号组在第一光信号组波长处不伴有显着的ASE光。因此，第一和第二光信号组具有比在不存在滤光器时将存在的噪声更小的噪声，并且与光信号组相关联的比特错误率降低。

2. 发明授权

US09099833B2 Multiplexer having ASE suppression 有权
标题翻译：具有ASE抑制功能的多路复用器
公开(公告)号：US09099833B2
公开(公告)日：2015-08-04
申请号：US14145768
申请日：2013-12-31
申请人： Matthew L. Mitchell , Zhong Pan , Michael F. Van Leeuwen
发明人： Matthew L. Mitchell , Zhong Pan , Michael F. Van Leeuwen
IPC分类号： H04J14/02 , H01S3/00 , H01S3/067
CPC分类号： H04J14/0201 , H04B10/506 , H04J14/0212
摘要： Consistent with the present disclosure, optical filters are provided in a reconfigurable optical add-drop multiplexer (ROADM). In one example, groups of optical signals are amplified by corresponding erbium-doped fiber amplifiers (EDFAs) and supplied to each optical filter, which has a passband that includes the wavelengths associated with the received optical signal group. Light at wavelengths outside the passband of each optical filter, such as amplified stimulated emission (ASE) light generated by a respective EDFA, is significantly attenuated. Each optical signal group, after such amplification and filtering may then be switched and combined in a multicast switch before being directed toward a desired optical communication path. When, for example, first and second optical signal groups are combined, however, the first optical signal group is accompanied by little or no ASE light at the second optical signal group wavelengths. In addition, the second optical signal group is not accompanied by significant ASE light at the first optical signal group wavelengths. Accordingly, the first and second optical signal groups have less noise than would otherwise be present in the absence of the optical filters, and bit error rates associated with the optical signal groups are reduced.
摘要翻译：根据本公开，光学滤波器被提供在可重新配置的光分插复用器（ROADM）中。在一个示例中，光信号组由相应的掺铒光纤放大器（EDFA）放大并提供给每个滤光器，每个滤光器具有包含与所接收的光信号组相关联的波长的通带。每个滤光器的通带外的波长处的光，例如由相应EDFA产生的放大的受激发射（ASE）光的光被显着衰减。在这样的放大和滤波之后，每个光信号组然后可以在指向所需的光通信路径之前在多播交换机中进行切换和组合。然而，当例如第一和第二光学信号组合时，第二光学信号组在第二个光学信号组波长处伴随很少或没有ASE光。此外，第二光信号组在第一光信号组波长处不伴有显着的ASE光。因此，第一和第二光信号组具有比在不存在滤光器时将存在的噪声更小的噪声，并且与光信号组相关联的比特错误率降低。

3. 发明授权

US08064486B2 Determination of channel latency within a round-trip path 有权
标题翻译：确定往返路径中的通道延迟
公开(公告)号：US08064486B2
公开(公告)日：2011-11-22
申请号：US11852186
申请日：2007-09-07
申请人： Zhong Pan
发明人： Zhong Pan
IPC分类号： H04J3/06 , H04B17/00 , H04B10/08 , H04B10/00
CPC分类号： H04L43/50 , H04L43/0864
摘要： The present invention provides a system, apparatus, and method for determining latency differences in channels within a link at a single test site. In particular, the method allows for a single transmitting device to determine distinct latency differences on both transmitter and receiver-side paths without requiring a terminating node on the other side of the connection. In other words, a switch is used, in lieu of such a terminating node, at the other side of the paths that switches at least one channel's content onto another channel and sends it back for a round trip on various transmitter-and-receiver-side-paths combinations. The present invention is based on round trip measurements and switching capability of the receiving node.
摘要翻译：本发明提供了一种用于确定单个测试站点内的链路内的信道中的延迟差异的系统，装置和方法。特别地，该方法允许单个发送设备在发送器和接收机侧路径上确定不同的延迟差异，而不需要连接的另一侧上的终止节点。换句话说，在路径的另一侧使用一个交换机代替这样一个终端节点，该路径将至少一个信道的内容切换到另一个信道上，并将其发送回各种发射机和接收机 - 侧路组合。本发明基于接收节点的往返测量和切换能力。

4. 发明授权

US07948006B2 Photodiode with high ESD threshold 有权
标题翻译：具有高ESD阈值的光电二极管
公开(公告)号：US07948006B2
公开(公告)日：2011-05-24
申请号：US12476070
申请日：2009-06-01
申请人： Zhong Pan , David Venables
发明人： Zhong Pan , David Venables
IPC分类号： H01L23/60
CPC分类号： H01L31/105 , H01L31/022416 , H01L31/107 , H01L31/1844 , Y02E10/544
摘要： A photodetector with an improved electrostatic discharge damage threshold is disclosed, suitable for applications in telecommunication systems operating at elevated data rates. The photodetector may be a PIN or an APD fabricated in the InP compound semiconductor system. The increased ESD damage threshold is achieved by reducing the ESD induced current density in the photodetector by a suitable widening of the contact at a critical location, increasing the series resistance and promoting lateral current spreading by means of a current spreading layer.
摘要翻译：公开了具有改善的静电放电损伤阈值的光电检测器，适用于以升高的数据速率工作的电信系统中的应用。光电检测器可以是在InP化合物半导体系统中制造的PIN或APD。增加的ESD损伤阈值是通过在关键位置适当扩大触点来降低光电探测器中的ESD感应电流密度来实现的，通过电流扩散层增加串联电阻并促进横向电流扩展。

5. 发明授权

US08325413B2 Method and apparatus for controlling an output of an optical amplifier 有权
标题翻译：用于控制光放大器的输出的方法和装置
公开(公告)号：US08325413B2
公开(公告)日：2012-12-04
申请号：US12732118
申请日：2010-03-25
申请人： Abhijeet D. Deore , Andrew Q. Phan , Zhong Pan
发明人： Abhijeet D. Deore , Andrew Q. Phan , Zhong Pan
IPC分类号： H04B10/17 , H04B10/12
CPC分类号： H01S3/06758 , H01S3/09408 , H01S3/10015 , H01S3/1301 , H01S3/1608 , H01S3/302 , H04B10/2916 , H04J14/0201 , H04J14/0221
摘要： A system is provided that includes optical amplifiers provided upstream from an optical add-drop multiplexer (OADM). One of the optical amplifiers may be a Raman amplifier that supplies amplified light to another optical amplifier, such as an erbium doped fiber amplifier (EDFA), which, in turn, further amplifies and feeds the light to an input of the OADM. During turn-up, for example, the EDFA may initially be disabled, the power of the pump lasers of the Raman amplifier may be gradually increased until light input to the EDFA exceeds a power threshold at which the EDFA can amplify the input light. Light supplied to the EDFA does not have an excessive amount of power. Accordingly, at this point, the gain of the EDFA may be appropriately adjusted and then activated to supply optical signals to the OADM. Such optical signals may have a low power but not too low so as to prevent proper operation of downstream EDFA. Moreover, these optical signal do not have power that is so high as to cause “spiking.” As a result, cross-talk with optical signals added by the OADM is minimized, and such added optical signals may be sufficiently amplified by optical amplifiers downstream from the OADM.
摘要翻译：提供了一种包括从光分插复用器（OADM）上游提供的光放大器的系统。光放大器之一可以是拉曼放大器，其将放大的光提供给另一个光放大器，例如掺铒光纤放大器（EDFA），其又进一步放大并将光馈送到OADM的输入。例如，在上电期间，EDFA最初可能被禁用，拉曼放大器的泵浦激光器的功率可以逐渐增加，直到输入到EDFA的光超过EDFA可以放大输入光的功率阈值。提供给EDFA的光不具有过多的功率。因此，此时可以适当地调节EDFA的增益，然后激活以向OADM提供光信号。这样的光信号可能具有低功率但不太低，以便防止下游EDFA的正常操作。而且，这些光信号的功率不高，从而引起尖峰。结果，由OADM添加的光信号的串扰最小化，并且这种添加的光信号可以被OADM下游的光放大器充分放大。

6. 发明授权

US08005109B2 Method and network apparatus for adjusting communication resources within a community 有权
标题翻译：用于调整社区内的通信资源的方法和网络装置
公开(公告)号：US08005109B2
公开(公告)日：2011-08-23
申请号：US12114206
申请日：2008-05-02
申请人： Xuyong Wu , Zhong Pan , Quanbo Zhao
发明人： Xuyong Wu , Zhong Pan , Quanbo Zhao
IPC分类号： H04J3/16
CPC分类号： H04W16/02
摘要： A method and a network apparatus for adjusting communication resources in a community are disclosed. When the topological structure of the community changes, e.g., when new base station joins or exits, and when the community combines or splits, each base station re-allocates the communication resources by using a uniform algorithm, or the server or one base station in the community re-allocates the communication resources uniformly, then the base stations in the community are adjusted to the their own available resource at the same time based on the re-allocation results. The communication resources includes not only the frequency spectrum, but also those are exclusively occupied by a base station required by its normal operation, e.g., time slot, CDMA code word, sub-channel etc. With the present disclosure, the automatic optimum allocation and adjustment of the communication resources in a community could be realized.
摘要翻译：公开了一种用于调整社区中的通信资源的方法和网络装置。当社区的拓扑结构发生变化时，例如当新的基站加入或退出时，并且当社区组合或分裂时，每个基站通过使用统一的算法或者服务器或一个基站进行重新分配通信资源社区统一重新分配通信资源，根据重新分配结果，社区基站同时调整自己的可用资源。通信资源不仅包括频谱，而且还包括由正常操作所需的基站（例如，时隙，CDMA码字，子信道等）专门占用的。根据本公开，自动优化分配和可以实现社区沟通资源的调整。

7. 发明申请

US20090020841A1 Mesa-Type Photodetectors With Lateral Diffusion Junctions 有权
标题翻译：具有侧向扩散接头的Mesa型光电探测器
公开(公告)号：US20090020841A1
公开(公告)日：2009-01-22
申请号：US12174079
申请日：2008-07-16
申请人： Syn-Yem Hu , Zhong Pan
发明人： Syn-Yem Hu , Zhong Pan
IPC分类号： H01L31/00 , H01L21/00
CPC分类号： H01L31/184 , H01L31/105 , Y02E10/544
摘要： The present invention relates to a stable mesa-type photodetector with lateral diffusion junctions. The invention has found that without resorting to the complicated regrowth approach, a simple Zn diffusion process can be used to create high-quality semiconductor junction interfaces at the exposed critical surface or to terminate the narrow-bandgap photon absorption layers. The invention converts the epi material layers near or at the vicinity of the etched mesa trench or etched mesa steps into a different dopant type through impurity diffusion process. Preferably the diffused surfaces are treated with a subsequent surface passivation. This invention can be applied to both top-illuminating and bottom-illuminating configurations.
摘要翻译：本发明涉及具有横向扩散结的稳定的台面型光电探测器。本发明已经发现，不采用复杂的再生方法，可以使用简单的Zn扩散工艺来在暴露的临界表面产生高质量的半导体结界面或者终止窄带隙光子吸收层。本发明通过杂质扩散工艺将蚀刻的台面沟槽附近或附近的外延层材料层转化成不同的掺杂剂类型。优选地，扩散表面用随后的表面钝化处理。本发明可以应用于顶部照明和底部照明配置。

8. 发明授权

US07834379B2 Avalanche photodiode with edge breakdown suppression 有权
标题翻译：具有边缘击穿抑制的雪崩光电二极管
公开(公告)号：US07834379B2
公开(公告)日：2010-11-16
申请号：US12173189
申请日：2008-07-15
申请人： Zhong Pan , David Venables , Craig Ciesla
发明人： Zhong Pan , David Venables , Craig Ciesla
IPC分类号： H01L31/18
CPC分类号： H01L31/1075 , H01L21/2258 , H01L31/1035 , H01L31/184 , Y02E10/544
摘要： The invention relates to an avalanche photodiode having enhanced gain uniformity enabled by a tailored diffused p-n junction profile. The tailoring is achieved by a two stage doping process incorporating a solid source diffusion in combination with conventional gas source diffusion. The solid source diffusion material is selected for its solubility to the dopant compared to the solubility of the multiplication layer to dopant. The solid source has a diameter between the first and second diffusion windows. Thus, there are three distinct diffusion regions during the second diffusion. The dopant in the multiplication layer at the edge region, the dopant from the solid source material with a relatively higher dopant concentration (limited by the solubility of the dopant in the solid source material) at the intermediate region, and the central region exposed to an infinite diffusion source from the solid source material as it is continually charged with new dopant from the external gas source. The result is that both the dopant concentration and the diffusion depth decrease gradually from the center to the edge of the device. This tailored diffusion profile enables control of the electric field distribution such that edge breakdown is suppressed.
摘要翻译：本发明涉及一种雪崩光电二极管，其具有通过定制的扩散p-n结分布实现的增强的增益均匀性。通过结合常规气源扩散的固体源扩散的两阶段掺杂工艺来实现定制。与增殖层对掺杂剂的溶解度相比，选择固体源扩散材料对于掺杂剂的溶解度。固体源具有在第一和第二扩散窗口之间的直径。因此，在第二次扩散期间存在三个不同的扩散区域。在边缘区域的乘法层中的掺杂剂，来自固体源材料的掺杂剂在中间区域具有相对较高的掺杂剂浓度（受掺杂剂在固体源材料中的溶解度的限制）和暴露于来自固体源材料的无限扩散源，因为它从外部气体源连续地带有新的掺杂剂。结果是掺杂剂浓度和扩散深度从器件的中心到边缘逐渐减小。这种定制的扩散分布使得能够控制电场分布，从而抑制边缘击穿。

9. 发明授权

US07795064B2 Front-illuminated avalanche photodiode 有权
标题翻译：前照明雪崩光电二极管
公开(公告)号：US07795064B2
公开(公告)日：2010-09-14
申请号：US12260688
申请日：2008-10-29
申请人： Zhong Pan , Craig Ciesla
发明人： Zhong Pan , Craig Ciesla
IPC分类号： H01L21/00
CPC分类号： H01L31/107 , H01L31/18
摘要： The present invention provides a front-illuminated avalanche photodiode (APD) with improved intrinsic responsivity, as well as a method of fabricating such a front-illuminated APD. The front-illuminated APD comprises an APD body of semiconductor material, which includes a substrate and a layer stack disposed on a front surface of the substrate. The layer stack includes an absorption layer, a multiplication layer, and a field-control layer. Advantageously, a back surface of the APD body is mechanically and chemically polished, and a reflector having a reflectance of greater than 90% at the absorption wavelength band is disposed on the back surface of the APD body. Thus, incident light that is not absorbed in a first pass through the absorption layer is reflected by the reflector for a second pass through the absorption layer, increasing the intrinsic responsivity of the front-illuminated APD.
摘要翻译：本发明提供了具有改进的本征响应性的前照明雪崩光电二极管（APD），以及制造这种前照明APD的方法。前照明APD包括半导体材料的APD体，其包括衬底和设置在衬底的前表面上的层堆叠。层叠包括吸收层，倍增层和场控制层。有利地，APD主体的后表面被机械和化学抛光，并且在吸收波长带处具有大于90％的反射率的反射器设置在APD体的背面上。因此，通过吸收层的第一次通过中没有被吸收的入射光被反射器反射，用于通过吸收层的第二次通过，增加了前照明APD的固有响应性。

10. 发明申请

US20090186609A1 METHOD AND DEVICE FOR DETECTING NEIGHBORING BS INTERFERENCE AND IDENTIFYING INTERFERENTIAL NEIGHBORING BS 有权
标题翻译：用于检测邻近BS干扰和识别干扰相邻BS的方法和设备
公开(公告)号：US20090186609A1
公开(公告)日：2009-07-23
申请号：US12416742
申请日：2009-04-01
申请人： Xuyong Wu , Zhong Pan
发明人： Xuyong Wu , Zhong Pan
IPC分类号： H04W24/00
CPC分类号： H04W24/02 , H04B17/24 , H04B17/345 , H04W72/082 , H04W88/08
摘要： A method for detecting a neighboring BS interference is provided. The method includes the following steps. A base station (BS) informs a coexistence signaling interval information to a subscriber station (SS) in a wireless access system. The SS obtains a silent period in a coexistence signaling interval from the coexistence signaling interval information, and monitors an interference information from a neighboring BS during the silent period. The SS reports the monitored interference information to the BS. A device for detecting a neighboring BS interference, a method for identifying an interferential neighboring BS and a device thereof are further provided. The problem of resource conflict raised when two BSs which originally are not neighboring BSs become neighboring BSs because of changes of a SS's status, or SS's position and environmental conditions, is solved.
摘要翻译：提供了一种用于检测相邻BS干扰的方法。该方法包括以下步骤。基站（BS）向无线接入系统中的用户站（SS）通知共存信令间隔信息。 SS从共存信令间隔信息在共存信令间隔中获得静默期，并在静默期间监视来自相邻BS的干扰信息。 SS将监控的干扰信息报告给BS。还提供了用于检测相邻BS干扰的装置，用于识别干涉邻近BS的方法及其装置。原来不是相邻BS的两个BS由于SS状态的变化或SS的位置和环境条件而变成相邻BS，所以资源冲突的问题被提出。

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