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公开(公告)号：US09419742B2
公开(公告)日：2016-08-16
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：US09158068B2
公开(公告)日：2015-10-13
申请号：US13177363
申请日：2011-07-06
CPC分类号： G02B6/12011
摘要： Consistent with the present disclosure, an AWG is provided that has grating waveguide groupings that extend between a first free space region and a second free space region. The difference in length (ΔL) between successive grating waveguides differs for each grouping of grating waveguides, such that, for example, the ΔL associated with a given grating waveguide grouping is not an integer multiple of any of the other grating waveguide groupings. The grating waveguide groupings direct images having relatively small wavelength differences to a given output waveguide, and each grating waveguide grouping has an associated passband, which is similar to that of the conventional AWG. Unlike the conventional AWG, however, multiple grating waveguide groupings are included in the same AWG, such that the spectra associated with the grating waveguide groupings combine to provide a transmission characteristic having a passband that is greater than any individual passband. Accordingly, even if the optical signal wavelengths vary or are offset from the center wavelength of the passband, such wavelengths may still be transmitted with less loss.
摘要翻译： 根据本公开，提供了AWG，其具有在第一自由空间区域和第二自由空间区域之间延伸的光栅波导分组。 对于每组光栅波导，连续光栅波导之间的长度差（＆Dgr; L）不同，例如，与给定光栅波导组合相关联的＆Dgr; L不是任何其他光栅波导的整数倍 分组。 光栅波导分组将具有相对小的波长差的图像分配给给定的输出波导，并且每个光栅波导组具有相关的通带，其类似于常规的AWG。 然而，与传统AWG不同，多个光栅波导分组被包括在相同的AWG中，使得与光栅波导分组相关联的光谱组合以提供具有大于任何单个通带的通带的传输特性。 因此，即使光信号波长变化或偏离通带的中心波长，这样的波长仍然可以以较少的损耗传输。
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公开(公告)号：US09031412B2
公开(公告)日：2015-05-12
申请号：US12612646
申请日：2009-11-04
申请人： Radhakrishnan L. Nagarajan , Fred A. Kish, Jr. , David F. Welch , Drew D. Perkins , Masaki Kato
发明人： Radhakrishnan L. Nagarajan , Fred A. Kish, Jr. , David F. Welch , Drew D. Perkins , Masaki Kato
IPC分类号： H04J14/02 , H04B10/50 , G02B6/12 , B82Y20/00 , H01S5/024 , H01S5/223 , H01S5/40 , G02B6/28 , G02B6/293 , H01S5/00 , H01S5/022 , H01S5/026 , H01S5/0683 , H01S5/10 , H01S5/12 , H01S5/343
CPC分类号： G02B6/12033 , B82Y20/00 , G02B6/12019 , G02B6/2813 , G02B6/293 , G02B6/29317 , G02B6/29338 , G02B6/29352 , H01S5/005 , H01S5/0085 , H01S5/02248 , H01S5/024 , H01S5/0261 , H01S5/0265 , H01S5/0268 , H01S5/0683 , H01S5/1032 , H01S5/12 , H01S5/1221 , H01S5/2231 , H01S5/34306 , H01S5/4031 , H01S5/4087 , H04B10/506
摘要： A coolerless photonic integrated circuit (PIC), such as a semiconductor electro-absorption modulator/laser (EML) or a coolerless optical transmitter photonic integrated circuit (TxPIC), may be operated over a wide temperature range at temperatures higher then room temperature without the need for ambient cooling or hermetic packaging. Since there is large scale integration of N optical transmission signal WDM channels on a TxPIC chip, a new DWDM system approach with novel sensing schemes and adaptive algorithms provides intelligent control of the PIC to optimize its performance and to allow optical transmitter and receiver modules in DWDM systems to operate uncooled. Moreover, the wavelength grid of the on-chip channel laser sources may thermally float within a WDM wavelength band where the individual emission wavelengths of the laser sources are not fixed to wavelength peaks along a standardized wavelength grid but rather may move about with changes in ambient temperature. However, control is maintained such that the channel spectral spacing between channels across multiple signal channels, whether such spacing is periodic or aperiodic, between adjacent laser sources in the thermally floating wavelength grid are maintained in a fixed relationship. Means are then provided at an optical receiver to discover and lock onto floating wavelength grid of transmitted WDM signals and thereafter demultiplex the transmitted WDM signals for OE conversion.
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4.发明授权公开(公告)号：US09025912B2
公开(公告)日：2015-05-05
申请号：US13537725
申请日：2012-06-29
CPC分类号： G02B6/26 , G02B6/12014 , G02B6/12019 , G02B6/12023
摘要： An optical device may include a substrate and an arrayed waveguide grating provided on the substrate. The arrayed waveguide grating may include a first slab or a second slab and multiple waveguides extending therebetween. The optical device may also include a layer of material provided on one of the first slab or second slab. The layer of material may have a thickness such that first light may have a first polarization is absorbed by the material and second light may have a second polarization passes through the one of the first slab or the second slab.
摘要翻译： 光学器件可以包括衬底和设置在衬底上的阵列波导光栅。 阵列波导光栅可以包括第一平板或第二平板以及在它们之间延伸的多个波导。 光学装置还可以包括设置在第一板或第二板之一上的一层材料。 材料层可以具有这样的厚度，使得第一光可以具有第一极化被材料吸收，并且第二光可以具有穿过第一板或第二板之一的第二极化。
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公开(公告)号：US08781324B2
公开(公告)日：2014-07-15
申请号：US12816599
申请日：2010-06-16
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：US08705904B2
公开(公告)日：2014-04-22
申请号：US12263471
申请日：2008-11-01
申请人： Fred A. Kish, Jr. , Mehrdad Ziari , Radhakrishnan L. Nagarajan , Masaki Kato , Vincent G. Dominic , Sanjeev Murthy , Alan Nilsson
发明人： Fred A. Kish, Jr. , Mehrdad Ziari , Radhakrishnan L. Nagarajan , Masaki Kato , Vincent G. Dominic , Sanjeev Murthy , Alan Nilsson
CPC分类号： G02B6/12004 , G02B6/12019 , G02B6/4249 , H01S5/02248 , H01S5/0268 , H01S5/4087 , H04J14/02
摘要： Consistent with the present disclosure, optical devices are provided along different optical paths in a photonic integrated circuit (PIC). The optical components have different optical losses associated therewith so that optical signals propagating in the optical paths have desired power levels, which may be uniform, for example.
摘要翻译： 根据本公开，光子器件沿着光子集成电路（PIC）中的不同光路提供。 光学部件具有与其相关的不同的光学损耗，使得在光路中传播的光信号具有期望的功率电平，例如可以是均匀的。
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公开(公告)号：US08233510B2
公开(公告)日：2012-07-31
申请号：US12363826
申请日：2009-02-02
IPC分类号： H01S3/10
CPC分类号： H04B10/532 , H01S5/0085 , H01S5/0265 , H01S5/12 , H01S5/4012 , H04B10/505 , H04B10/5561
摘要： A dual output laser source provided on a substrate outputs light from a first and second output. A portion of the light generated by the laser is supplied to a first modulator via the first output. A second portion of the light generated by the laser is supplied to a second modulator via the second output. The first modulator is provided on the substrate and generates a first modulated signal. The second modulator is also provided on the substrate and generates a second modulated signal. Each output of the laser is used to provide continuous wave light sources to components on photonic integrated circuit.
摘要翻译： 设置在基板上的双输出激光源输出来自第一和第二输出的光。 由激光产生的光的一部分经由第一输出被提供给第一调制器。 由激光产生的光的第二部分经由第二输出提供给第二调制器。 第一调制器设置在衬底上并产生第一调制信号。 第二调制器也设置在衬底上并产生第二调制信号。 激光器的每个输出用于向光子集成电路上的组件提供连续波光源。
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公开(公告)号：US20120057874A1
公开(公告)日：2012-03-08
申请号：US12987449
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.
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公开(公告)号：US07394953B1
公开(公告)日：2008-07-01
申请号：US11734259
申请日：2007-04-11
申请人： Radhakrishnan L. Nagarajan , Masaki Kato , Peter W. Evans , Jacco L. Pleumeekers , Mehrdad Ziari
发明人： Radhakrishnan L. Nagarajan , Masaki Kato , Peter W. Evans , Jacco L. Pleumeekers , Mehrdad Ziari
CPC分类号： G02B6/12033 , G02B6/12019
摘要： System, devices and methods are described that provide an integrated optical decombiner or optical combiner having both unamplified paths and amplified paths on which power monitoring and control may be located. A preferred multiplexing/demultiplexing optical path through the combiner/decombiner and a corresponding waveguide output/input is identified and optically coupled to a piece of fiber. Temperature control may be provided to tune an arrayed waveguide grating within the combiner/decombiner and minimize wavelength drift therein. Integrated power monitoring may be employed on one or more of the amplified waveguide paths to ensure that a preferred power level or range is maintained on an optical signal.
摘要翻译： 描述了系统，装置和方法，其提供集成光学分解器或光学组合器，其具有可放置功率监视和控制的未放大路径和放大路径。 通过组合器/分解器和对应的波导输出/输入的优选复用/解复用光路被识别并光学耦合到一片光纤。 可以提供温度控制以调谐组合器/分解器内的阵列波导光栅并使其中的波长漂移最小化。 可以在一个或多个放大的波导路径上采用集成功率监视，以确保在光信号上保持优选的功率电平或范围。
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公开(公告)号：US10012797B1
公开(公告)日：2018-07-03
申请号：US11045462
申请日：2005-01-27
申请人： Radhakrishnan L. Nagarajan , Fred A. Kish, Jr. , Masaki Kato , Charles H. Joyner , David F. Welch , Randal A. Salvatore , Richard P. Schneider , Mehrdad Ziari , Damien Jean Henri Lambert , Sheila K. Hurtt , Andrew G. Dentai , Atul Mathur , Vincent G. Dominic
发明人： Radhakrishnan L. Nagarajan , Fred A. Kish, Jr. , Masaki Kato , Charles H. Joyner , David F. Welch , Randal A. Salvatore , Richard P. Schneider , Mehrdad Ziari , Damien Jean Henri Lambert , Sheila K. Hurtt , Andrew G. Dentai , Atul Mathur , Vincent G. Dominic
CPC分类号： G02B6/12004 , G02B6/12009 , G02B6/136 , H01S5/02248 , H01S5/026 , H01S5/0265 , H01S5/0268 , H01S5/0683 , H01S5/1221 , H01S5/1231 , H01S5/34306 , H01S5/4012 , H01S5/4087
摘要： A semiconductor monolithic transmitter photonic integrated circuit (TxPIC) comprises two different situations, either at least one signal channel in the PIC having a modulated source with the channel also extended to include at least one additional element or a plurality of modulated sources comprising N signal channels in the PIC of different transmission wavelengths, where N is equal to or greater than two (2), which may also approximate emission wavelengths along a standardized wavelength grid. In these two different situations, a common active region for such modulated sources and additional channel elements is identified as an extended identical active layer (EIAL), as it extends from a single modulated source to such additional channel elements in the same channel and/or extends to additional modulated sources in separate channels where the number of such channels is N equal to two or greater. The emission wavelength of laser sources in the modulated sources have different positively detuned offsets of the laser emission wavelength relative to the laser active region wavelength, i.e., (λL,i−λPL,L,j>0), and their emission wavelengths form a wavelength grid which may substantially conform to a standardized wavelength grid, such as the ITU grid. These laser sources in the modulated sources with an EIAL are preferentially detuned in the range, for example, of about 20 nm to about 70 nm, preferentially from about 25 nm to about 50 nm, from the active region wavelength of the modulated sources.
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