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公开(公告)号：US20110150384A1
公开(公告)日：2011-06-23
申请号：US12646340
申请日：2009-12-23
IPC分类号： G02B6/126
CPC分类号： G02B6/126 , G02B6/27 , G02B6/2706 , G02B6/2766
摘要： Consistent with the present disclosure, a non-adiabatic polarization rotator is provided that can rotate the polarization of an incoming over a relatively short length. Light is supplied to the polarization rotator via a polarizer, which insures that the optical input to the polarization polarization rotator has a desired polarization. Preferably, the polarization rotator has a structure that is readily implemented with semiconductor materials and can be fabricated with known processing techniques. In addition, the polarization rotator and polarizer may include similar materials and/or layers, such that both may be readily integrated on a common substrate, such as an indium phosphide (InP) substrate.
摘要翻译： 根据本公开，提供了一种非绝热的偏振旋转器，其可以使相对较短长度的进入的偏振旋转。 通过偏振器将光提供给偏振旋转器，这确保了偏振旋转器的光输入具有期望的偏振。 优选地，偏振旋转器具有易于用半导体材料实现的结构，并且可以用已知的处理技术制造。 此外，偏振旋转器和偏振器可以包括相似的材料和/或层，使得两者可以容易地集成在公共衬底上，例如磷化铟（InP）衬底。
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公开(公告)号：US20110147874A1
公开(公告)日：2011-06-23
申请号：US12646558
申请日：2009-12-23
申请人： RADHAKRISHNAN L. NAGARAJAN , ANDREW G. DENTAI , SCOTT CORZINE , STEVEN NGUYEN , VIKRANT LAL , Jacco L. Pleumeekers , Peter W. Evans
发明人： RADHAKRISHNAN L. NAGARAJAN , ANDREW G. DENTAI , SCOTT CORZINE , STEVEN NGUYEN , VIKRANT LAL , Jacco L. Pleumeekers , Peter W. Evans
IPC分类号： H01L31/102 , H01L31/105 , H01L31/0232
CPC分类号： H01L31/105 , G02B6/12004 , G02B6/12007 , G02B6/2813 , G02B6/42 , H01L31/02019
摘要： Consistent with the present disclosure, a current blocking layer is provided between output waveguides carrying light to be sensed by the photodiodes in a balanced photodetector, and the photodiodes themselves. Preferably, the photodiodes are provided above the waveguides and sense light through evanescently coupling with the waveguides. In addition, the current blocking layer may include alternating p and n-type conductivity layers, such that, between adjacent ones of such layers, a reverse biased pn-junction is formed. The pn-junctions, therefore, limit the amount of current flowing from one photodiode of the balanced detector to the other, thereby improving performance.
摘要翻译： 与本公开一致，在平衡光电检测器中的由光电二极管传送的光的输出波导之间提供电流阻挡层，以及光电二极管本身。 优选地，光电二极管设置在波导上方并且通过与波导衰减耦合来感测光。 此外，电流阻挡层可以包括交替的p型和n型导电层，使得在相邻的这些层之间形成反向偏置的pn结。 因此，pn结限制了从平衡检测器的一个光电二极管流到另一个的电流量，从而提高性能。
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公开(公告)号：US20100322628A1
公开(公告)日：2010-12-23
申请号：US12572179
申请日：2009-10-01
CPC分类号： G02B6/12004 , G02B6/12009 , G02B6/264 , G02B2006/12126 , H04J14/02 , H04J14/06
摘要： A coherent optical receiver circuit is disclosed in which various components of the optical receiver may be provided or integrated, in one example, on a common substrate. Further integration is achieved by incorporating various optical demultiplexer designs that are relatively compact and conserve space on the surface of the substrate. The optical receiver circuit may be used to demultiplex quadrature phase shift keying (QPSK) optical signals.
摘要翻译： 公开了一种相干光接收器电路，其中在一个示例中，可以在公共基板上提供或集成光接收器的各种部件。 通过结合相对紧凑的各种光解复用器设计并节省衬底表面上的空间来实现进一步的集成。 光接收机电路可用于解复用正交相移键控（QPSK）光信号。
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公开(公告)号：US20130170833A1
公开(公告)日：2013-07-04
申请号：US13341111
申请日：2011-12-30
CPC分类号： G02B6/12026 , G02B6/12019 , G02F1/2257 , G02F2001/212 , H01S5/02453 , H01S5/4087 , H04J14/02
摘要： Pairs of distributed feedback (DFB) lasers are provided on a substrate. An arrayed waveguide grating (AWG) is also provided on the substrate having input waveguides, each of which being connected to a corresponding pair of DFB lasers. The wavelengths of optical signals supplied from each pair of DFB lasers may be spectrally spaced from one another by a free spectral range (FSR) of the AWG. By selecting either a first or second DFB laser in a pair and temperature tuning to adjust the wavelength, each pair of DFB lasers can supply optical signals at one of four wavelengths, pairs of which are spectrally spaced from one another by the FSR of the AWG. A widely tunable transmitter may thus be obtained.
摘要翻译： 分布反馈（DFB）激光器在基板上提供。 阵列波导光栅（AWG）也设置在具有输入波导的基板上，每个波导光栅连接到相应的一对DFB激光器。 从每对DFB激光器提供的光信号的波长可以通过AWG的自由光谱范围（FSR）彼此光谱间隔。 通过选择成对的第一或第二DFB激光器和温度调谐来调整波长，每对DFB激光器可以以四个波长中的一个提供光信号，其中的一对波长由AWG的FSR彼此光谱间隔开 。 因此可以获得广泛可调的发射器。
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公开(公告)号：US20100322629A1
公开(公告)日：2010-12-23
申请号：US12572208
申请日：2009-10-01
IPC分类号： H04J14/06
CPC分类号： G02B6/12004 , G02B6/12009 , G02B6/264 , G02B2006/12126 , H04J14/02 , H04J14/06
摘要： Consistent with the present disclosure, a polarization multiplexed optical signal having optical signals with both TE and TM polarizations is supplied to an input of a polarization beam splitter (PBS). The PBS includes a first output that supplies TE polarized optical signals and a second output supplies TM polarized optical signals. A first polarizer is coupled to the second output of the PBS to pass the TM polarized optical signals, while rejecting light having other polarizations, such as the TE polarization. A rotator then rotates the light output from the first polarizer, so that such light has a TE polarization. A second polarizer is coupled to the rotator to filter light having a polarization other than the TE polarization. In addition, a third polarizer is coupled to the first output of the PBS in order to filter or block any TM light, for example, that may be output from the PBS with the TE polarized signal. Accordingly, the optical signals in the polarization multiplexed optical signal are effectively filtered, and some are rotated so that each has the same, e.g., TE polarization. Moreover, each optical signal is substantially free from light having extraneous polarizations and may be supplied to an optical hybrid circuit. Data carried by such optical signals may thus be reliably recovered.
摘要翻译： 根据本公开，具有TE和TM偏振两者的光信号的偏振复用光信号被提供给偏振分束器（PBS）的输入端。 PBS包括提供TE偏振光信号的第一输出，第二输出提供TM偏振光信号。 第一偏振器耦合到PBS的第二输出以通过TM偏振光信号，同时抑制具有其它极化的光，例如TE偏振。 旋转器然后旋转从第一偏振器输出的光，使得这种光具有TE偏振。 第二偏振器耦合到旋转器以对具有除了TE极化之外的极化的光进行滤波。 此外，第三偏振器耦合到PBS的第一输出，以便滤波或阻挡例如可以用TE偏振信号从PBS输出的TM光。 因此，偏振复用光信号中的光信号被有效地滤波，并且有些被旋转，使得每个具有相同的例如TE偏振。 此外，每个光信号基本上没有具有外来极化的光，并且可以被提供给光混合电路。 因此可以可靠地恢复由这种光信号携带的数据。
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公开(公告)号：US20130170787A1
公开(公告)日：2013-07-04
申请号：US13340982
申请日：2011-12-30
CPC分类号： H04J14/0254 , G02B6/12019 , H04B10/506
摘要： Consistent with one example of the disclosed implementations, a photonic integrated circuit (PIC) may be provided that includes s group of lasers and an arrayed waveguide grating (AWG) disposed on a substrate. Each laser in the group may supply an optical signal, such that each optical signal has a different wavelength. Each laser may be tunable to at least two designated wavelengths, which are separated from one another by a free spectral range (FSR) of the AWG. As a result, the optical signals provided from each laser may be combined by the AWG, regardless of which designated wavelength the optical signals have. Accordingly, a PIC may be provided that has a relatively simple construction but can supply optical signals having tunable wavelengths.
摘要翻译： 与所公开的实施例的一个示例一致，可以提供包括s组激光器和设置在衬底上的阵列波导光栅（AWG）的光子集成电路（PIC）。 组中的每个激光器可以提供光信号，使得每个光信号具有不同的波长。 每个激光器可以被调谐到至少两个指定的波长，它们通过AWG的自由光谱范围（FSR）彼此分开。 结果，从每个激光器提供的光信号可以由AWG组合，而不管光信号具有哪个指定波长。 因此，可以提供具有相对简单结构但可提供具有可调波长的光信号的PIC。
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公开(公告)号：US20120057875A1
公开(公告)日：2012-03-08
申请号：US12987671
申请日：2011-01-10
IPC分类号： H04J14/02
CPC分类号： H04J14/0282 , H04J14/0246 , H04J14/025 , H04J14/0265 , H04J14/0298 , H04J2014/0253
摘要： Consistent with the present disclosure, an optical communication system, such as a passive optical network (PON), is provided that includes an optical line terminal (OLT) and a plurality of optical network units (ONUs). The OLT includes a plurality of photonic integrated circuits that have both optical transmitters and receivers provided therein. Accordingly, the OLT may have fewer components and a simpler, more reliable and cost-effective design than a conventional OLT including discrete components. In addition, various ONU configurations are provided that also have a simple design and fewer components. Thus, ONUs consistent with the present disclosure may also have reduced costs.
摘要翻译： 根据本公开，提供了诸如无源光网络（PON）的光通信系统，其包括光线路终端（OLT）和多个光网络单元（ONU）。 OLT包括多个光子集成电路，其具有设置在其中的光发送器和接收器。 因此，OLT可以具有比包括分立组件的常规OLT更少的组件和更简单，更可靠和更具成本效益的设计。 另外，提供了也具有简单设计和较少组件的各种ONU配置。 因此，与本公开一致的ONU也可以降低成本。
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公开(公告)号：US20100320370A1
公开(公告)日：2010-12-23
申请号：US12572203
申请日：2009-10-01
IPC分类号： H01L31/09 , H01L31/0232 , G02B6/26
CPC分类号： G02B6/12004 , G02B6/12009 , G02B6/264 , G02B2006/12126 , H04J14/02 , H04J14/06
摘要： A variable optical attenuator (VOA), which may include a Mach-Zehnder interferometer, is configured such that a substantial part of an input signal is output on a first waveguide, and a relatively small part of the input signal may be output on a second waveguide due to manufacturing process variations and/or other non-idealities. Such residual or extraneous light may interfere with light in the first waveguide, especially if the VOA is integrated on substrate. Accordingly, consistent with an aspect of the present disclosure, a photodiode may be provided to receive and absorb the residual light, thereby minimizing interference or cross-talk with light in the first waveguide.
摘要翻译： 可以包括马赫 - 策德尔干涉仪的可变光衰减器（VOA）被配置为使得输入信号的实质部分在第一波导上输出，并且输入信号的相对较小的一部分可以在第二波导 波导由于制造工艺变化和/或其他非理想性而产生。 这种残余或外来光可能会干扰第一波导中的光，特别是如果VOA集成在基板上。 因此，根据本公开的一个方面，可以提供光电二极管来接收和吸收残余光，从而最小化与第一波导中的光的干扰或串扰。
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