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1. 发明授权

US09419742B2 Optical communication system having tunable sources 有权
标题翻译：具有可调谐源的光通信系统
公开(公告)号：US09419742B2
公开(公告)日：2016-08-16
申请号：US13340982
申请日：2011-12-30
申请人： Radhakrishnan L. Nagarajan , Masaki Kato , Michael Francis Van Leeuwen , Timothy Butrie
发明人： Radhakrishnan L. Nagarajan , Masaki Kato , Michael Francis Van Leeuwen , Timothy Butrie
IPC分类号： G02B6/12 , H04J14/02 , H04B10/50
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。

2. 发明授权

US09379838B2 Optical communication system having tunable sources 有权
标题翻译：具有可调谐源的光通信系统
公开(公告)号：US09379838B2
公开(公告)日：2016-06-28
申请号：US13341111
申请日：2011-12-30
申请人： Radhakrishnan L. Nagarajan , Masaki Kato , Michael Francis Van Leeuwen , Timothy Butrie
发明人： Radhakrishnan L. Nagarajan , Masaki Kato , Michael Francis Van Leeuwen , Timothy Butrie
IPC分类号： H04J14/02 , H04J14/00
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。

3. 发明授权

US08964284B2 Banded semiconductor optical amplifier 有权
标题翻译：带状半导体光放大器
公开(公告)号：US08964284B2
公开(公告)日：2015-02-24
申请号：US13449515
申请日：2012-04-18
申请人： Mehrdad Ziari , Scott Corzine , Masaki Kato , Michael Francis Van Leeuwen , Radhakrishnan L. Nagarajan , Matthew L. Mitchell , Fred A. Kish, Jr.
发明人： Mehrdad Ziari , Scott Corzine , Masaki Kato , Michael Francis Van Leeuwen , Radhakrishnan L. Nagarajan , Matthew L. Mitchell , Fred A. Kish, Jr.
IPC分类号： H04S5/00
CPC分类号： H04B10/2914 , H01S5/4087 , H01S5/5009 , H01S5/5036 , H01S5/5045 , H04J14/02 , H04J14/0221 , H04J14/06
摘要： A semiconductor optical amplifier module may include a beam splitter to split an optical signal into two polarization optical signals including a first polarization optical signal with a Transverse Magnetic (TM) polarization provided along a first path of two paths, and a second polarization optical signal with a Transverse Electric (TE) polarization provided along a second path of the two paths; a first rotator to rotate the TM polarization of the first polarization optical signal to TE polarization; a first semiconductor optical amplifier to amplify the rotated first polarization optical signal to output a first resultant optical signal; a second semiconductor optical amplifier to amplify the second polarization optical signal; and a second rotator to rotate the polarization of the amplified second polarization optical signal to output a second resultant optical signal; and a beam combiner to combine the first resultant optical signal and the second resultant optical signal.
摘要翻译：半导体光放大器模块可以包括光束分离器，以将光信号分成两个偏振光信号，包括具有沿着两条路径的第一路径提供的横向磁（TM）偏振的第一偏振光信号，以及第二偏振光信号，沿着两个路径的第二路径提供的横向电（TE）极化; 第一旋转器，用于将第一偏振光信号的TM偏振旋转为TE极化; 第一半导体光放大器，用于放大旋转的第一偏振光信号以输出第一合成光信号; 第二半导体光放大器，用于放大第二偏振光信号; 以及第二旋转器，用于旋转放大的第二偏振光信号的偏振，以输出第二合成光信号; 以及光束组合器，以组合第一合成光信号和第二合成光信号。

4. 发明申请

US20130279911A1 RAMAN PUMP CIRCUIT 有权
标题翻译：拉曼泵电路
公开(公告)号：US20130279911A1
公开(公告)日：2013-10-24
申请号：US13449532
申请日：2012-04-18
申请人： Mehrdad Ziari , Scott Corzine , Masaki Kato , Michael Francis Van Leeuwen , Radhakrishnan L. Nagarajan , Matthew L. Mitchell , Fred A. Kish, JR.
发明人： Mehrdad Ziari , Scott Corzine , Masaki Kato , Michael Francis Van Leeuwen , Radhakrishnan L. Nagarajan , Matthew L. Mitchell , Fred A. Kish, JR.
IPC分类号： H04J14/06 , H01S3/30
CPC分类号： H04B10/2916 , H01S3/094073 , H01S3/302 , H01S5/005 , H01S5/4012
摘要： A Raman pump may include a dual output laser configured to output two optical signals; a delay interferometer configured to delay a first of the two optical signals to decorrelate the two optical signals from each other; and a combiner configured to combine the delayed first of the two optical signals and a second of the two optical signals to provide a Raman amplification signal.
摘要翻译：拉曼泵可以包括配置成输出两个光信号的双输出激光器; 延迟干涉仪被配置为延迟两个光信号中的第一个以将两个光信号相互去相关; 以及组合器，其被配置为组合两个光信号中延迟的第一个和两个光信号中的第二个，以提供拉曼放大信号。

5. 发明授权

US09172467B2 Raman pump circuit 有权
标题翻译：拉曼泵电路
公开(公告)号：US09172467B2
公开(公告)日：2015-10-27
申请号：US13449532
申请日：2012-04-18
申请人： Mehrdad Ziari , Scott Corzine , Masaki Kato , Michael Francis Van Leeuwen , Radhakrishnan L. Nagarajan , Matthew L. Mitchell , Fred A. Kish, Jr.
发明人： Mehrdad Ziari , Scott Corzine , Masaki Kato , Michael Francis Van Leeuwen , Radhakrishnan L. Nagarajan , Matthew L. Mitchell , Fred A. Kish, Jr.
IPC分类号： H04B10/291 , H01S3/094 , H01S5/40 , H01S3/30 , H01S5/00
CPC分类号： H04B10/2916 , H01S3/094073 , H01S3/302 , H01S5/005 , H01S5/4012
摘要： A Raman pump may include a dual output laser configured to output two optical signals; a delay interferometer configured to delay a first of the two optical signals to decorrelate the two optical signals from each other; and a combiner configured to combine the delayed first of the two optical signals and a second of the two optical signals to provide a Raman amplification signal.
摘要翻译：拉曼泵可以包括配置成输出两个光信号的双输出激光器; 延迟干涉仪被配置为延迟两个光信号中的第一个以将两个光信号相互去相关; 以及组合器，其被配置为组合两个光信号中延迟的第一个和两个光信号中的第二个，以提供拉曼放大信号。

6. 发明申请

US20130279910A1 Banded Semiconductor Optical Amplifier 有权
标题翻译：带状半导体光放大器
公开(公告)号：US20130279910A1
公开(公告)日：2013-10-24
申请号：US13449515
申请日：2012-04-18
申请人： Mehrdad Ziari , Scott Corzine , Masaki Kato , Michael Francis Van Leeuwen , Radhakrishnan L. Nagarajan , Matthew L. Mitchell , Fred A. Kish, JR.
发明人： Mehrdad Ziari , Scott Corzine , Masaki Kato , Michael Francis Van Leeuwen , Radhakrishnan L. Nagarajan , Matthew L. Mitchell , Fred A. Kish, JR.
IPC分类号： H01S5/06 , H04J14/02
CPC分类号： H04B10/2914 , H01S5/4087 , H01S5/5009 , H01S5/5036 , H01S5/5045 , H04J14/02 , H04J14/0221 , H04J14/06
摘要： A semiconductor optical amplifier module may include a beam splitter to split an optical signal into two polarization optical signals including a first polarization optical signal with a Transverse Magnetic (TM) polarization provided along a first path of two paths, and a second polarization optical signal with a Transverse Electric (TE) polarization provided along a second path of the two paths; a first rotator to rotate the TM polarization of the first polarization optical signal to TE polarization; a first semiconductor optical amplifier to amplify the rotated first polarization optical signal to output a first resultant optical signal; a second semiconductor optical amplifier to amplify the second polarization optical signal; and a second rotator to rotate the polarization of the amplified second polarization optical signal to output a second resultant optical signal; and a beam combiner to combine the first resultant optical signal and the second resultant optical signal.
摘要翻译：半导体光放大器模块可以包括光束分离器，以将光信号分成两个偏振光信号，包括具有沿着两条路径的第一路径提供的横向磁（TM）偏振的第一偏振光信号，以及第二偏振光信号，沿着两个路径的第二路径提供的横向电（TE）极化; 第一旋转器，用于将第一偏振光信号的TM偏振旋转为TE极化; 第一半导体光放大器，用于放大旋转的第一偏振光信号以输出第一合成光信号; 第二半导体光放大器，用于放大第二偏振光信号; 以及第二旋转器，用于旋转放大的第二偏振光信号的偏振，以输出第二合成光信号; 以及光束组合器，以组合第一合成光信号和第二合成光信号。

7. 发明授权

US09158068B2 Wide passband AWG 有权
标题翻译：宽通带AWG
公开(公告)号：US09158068B2
公开(公告)日：2015-10-13
申请号：US13177363
申请日：2011-07-06
申请人： Masaki Kato , Radhakrishnan L. Nagarajan
发明人： Masaki Kato , Radhakrishnan L. Nagarajan
IPC分类号： G02B6/34 , G02B6/12
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。

8. 发明授权

US09031412B2 Coolerless photonic integrated circuits (PICs) for WDM transmission networks and PICs operable with a floating signal channel grid changing with temperature but with fixed channel spacing in the floating grid 有权
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.

9. 发明授权

US09025912B2 Polarization material on an optical multiplexer or an optical demultiplexer 有权
标题翻译：光复用器或光解复用器上的极化材料
公开(公告)号：US09025912B2
公开(公告)日：2015-05-05
申请号：US13537725
申请日：2012-06-29
申请人： Radhakrishnan L. Nagarajan , Masaki Kato
发明人： Radhakrishnan L. Nagarajan , Masaki Kato
IPC分类号： G02B6/00 , G02B6/26
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。

10. 发明授权

US08781324B2 Optical receiver integrated on a substrate 有权
标题翻译：集成在基板上的光接收器
公开(公告)号：US08781324B2
公开(公告)日：2014-07-15
申请号：US12816599
申请日：2010-06-16
申请人： Radhakrishnan L. Nagarajan , Masaki Kato , Jeffrey T. Rahn
发明人： Radhakrishnan L. Nagarajan , Masaki Kato , Jeffrey T. Rahn
IPC分类号： H04J4/00 , H04J14/06 , H04B10/06
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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