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1. 发明授权

US08238759B2 High capacity transmitter implemented on a photonic integrated circuit 有权
标题翻译：在光子集成电路上实现的高容量发射器
公开(公告)号：US08238759B2
公开(公告)日：2012-08-07
申请号：US12345315
申请日：2008-12-29
申请人： Charles H. Joyner , Radhakrishnan L. Nagarajan , Masaki Kato , Peter W. Evans , Fred A. Kish, Jr.
发明人： Charles H. Joyner , Radhakrishnan L. Nagarajan , Masaki Kato , Peter W. Evans , Fred A. Kish, Jr.
IPC分类号： H04B10/04
CPC分类号： H04B10/532 , H01S5/0085 , H01S5/0265 , H01S5/12 , H01S5/4012 , H04B10/505 , H04B10/5561
摘要： A high capacity optical transmitter implemented on a photonic integrated circuit chip comprises a single light source which supplies a continuous wave having a particular wavelength to a plurality of modulators to form modulated optical information signals. A phase shifter is coupled to at least one of the modulators and is used to shift the phase of the corresponding modulated optical information signal associated with a particular modulator. A polarization beam combiner receives each of the modulated optical information signals from the modulators and the modulated optical information signal from the phase shifter and combines each of these signals to form a polarization multiplexed differential quadrature phase-shift keying signal. The light source, the plurality of modulators, the phase shifter and the polarization beam combiner are all integrated on the chip.
摘要翻译：在光子集成电路芯片上实现的高容量光发射器包括单个光源，其向多个调制器提供具有特定波长的连续波以形成调制的光信息信号。移相器耦合到至少一个调制器，并且用于移位与特定调制器相关联的相应调制光信息信号的相位。偏振光束组合器从调制器接收来自调制器的调制光信息信号和来自移相器的调制光信息信号，并组合这些信号中的每一个以形成偏振复用差分正交相移键控信号。光源，多个调制器，移相器和偏振光束组合器都集成在芯片上。

2. 发明申请

US20090245795A1 HIGH CAPACITY TRANSMITTER IMPLEMENTED ON A PHOTONIC INTEGRATED CIRCUIT 有权
标题翻译：在光电集成电路上实现的高容量发射器
公开(公告)号：US20090245795A1
公开(公告)日：2009-10-01
申请号：US12345315
申请日：2008-12-29
申请人： Charles H. Joyner , Radhakrishnan L. Nagarajan , Masaki Kato , Peter W. Evans , Fred A. Kish, JR.
发明人： Charles H. Joyner , Radhakrishnan L. Nagarajan , Masaki Kato , Peter W. Evans , Fred A. Kish, JR.
IPC分类号： H04J14/02
CPC分类号： H04B10/532 , H01S5/0085 , H01S5/0265 , H01S5/12 , H01S5/4012 , H04B10/505 , H04B10/5561
摘要： A high capacity optical transmitter implemented on a photonic integrated circuit chip comprises a single light source which supplies a continuous wave having a particular wavelength to a plurality of modulators to form modulated optical information signals. A phase shifter is coupled to at least one of the modulators and is used to shift the phase of the corresponding modulated optical information signal associated with a particular modulator. A polarization beam combiner receives each of the modulated optical information signals from the modulators and the modulated optical information signal from the phase shifter and combines each of these signals to form a polarization multiplexed differential quadrature phase-shift keying signal. The light source, the plurality of modulators, the phase shifter and the polarization beam combiner are all integrated on the chip.
摘要翻译：在光子集成电路芯片上实现的高容量光发射器包括单个光源，其向多个调制器提供具有特定波长的连续波以形成调制的光信息信号。移相器耦合到至少一个调制器，并且用于移位与特定调制器相关联的相应调制光信息信号的相位。偏振光束组合器从调制器接收来自调制器的调制光信息信号和来自移相器的调制光信息信号，并组合这些信号中的每一个以形成偏振复用差分正交相移键控信号。光源，多个调制器，移相器和偏振光束组合器都集成在芯片上。

3. 发明授权

US09372306B1 Method of achieving acceptable performance in and fabrication of a monolithic photonic integrated circuit (PIC) with integrated arrays of laser sources and modulators employing an extended identical active layer (EIAL) 有权
标题翻译：在具有集成的激光源阵列和使用延伸的相同有源层（EIAL）的调制器的单片光子集成电路（PIC）中实现可接受的性能和制造方法，
公开(公告)号：US09372306B1
公开(公告)日：2016-06-21
申请号：US11045827
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
IPC分类号： G02B6/12
CPC分类号： G02B6/12009 , G02B6/00 , G02B6/02204 , G02B6/12004 , G02B6/12019 , G02B6/12023 , G02B6/12026 , G02B6/12028 , G02B6/12033 , G02B6/124 , G02B6/4215 , G02F1/0121 , G02F1/01725 , G02F1/025 , G02F2001/0175 , G02F2001/01758 , G02F2203/05 , H01S5/0085 , H01S5/024 , H01S5/02415 , H01S5/02453 , H01S5/02461 , H01S5/02476 , H01S5/026 , H01S5/0261 , H01S5/0264 , H01S5/0265 , H01S5/0268 , H01S5/0425 , H01S5/0612 , H01S5/06256 , H01S5/06258 , H01S5/0683 , H01S5/0687 , H01S5/12 , H01S5/1228 , H01S5/2077 , H01S5/22 , H01S5/2214 , H01S5/2224 , H01S5/227 , H01S5/2272 , H01S5/2275 , H01S5/3408 , H01S5/34306 , H01S5/4025 , H01S5/4031 , H01S5/4087 , H01S5/50 , H04B10/506 , H04B10/572 , H04J14/02
摘要： A method provides acceptable performance from a semiconductor transmitter photonic integrated circuit (TxPIC) that contains a plurality of modulated sources each comprising a laser source and an external modulator where each laser source provides a different emission wavelength and each modulated source forms a separate signal channel, comprising the steps of providing at least some of the signal channels with an extended identical active layer (EIAL) so that the modulated sources each have an identical active region wavelength and detuning the laser emission wavelength in each laser source within the EIAL from the laser active region wavelength.
摘要翻译：一种方法从包含多个调制源的半导体发射器光子集成电路（TxPIC）提供可接受的性能，每个调制源包括激光源和外部调制器，其中每个激光源提供不同的发射波长，并且每个调制的源形成单独的信号通道，包括以下步骤：向扩展的相同有源层（EIAL）提供信号通道的至少一些，使得调制源各自具有相同的有源区波长并使来自激光器活动的EIAL内的每个激光源中的激光发射波长失谐区域波长。

4. 发明申请

US20110243556A1 TRANSCEIVER PHTONIC INTEGRATED CIRCUIT 有权
标题翻译：收发器波导集成电路
公开(公告)号：US20110243556A1
公开(公告)日：2011-10-06
申请号：US12753833
申请日：2010-04-02
申请人： Radhakrishnan L. Nagarajan , Masaki Kato , Fred A. Kish, JR. , David F. Welch , Charles H. Joyner
发明人： Radhakrishnan L. Nagarajan , Masaki Kato , Fred A. Kish, JR. , David F. Welch , Charles H. Joyner
IPC分类号： H04J14/00
CPC分类号： H04J14/02 , H04B10/40 , H04J14/06
摘要： The present invention provides for a transceiver comprising a transmitter portion and a receiver portion. The transmitter portion includes a laser, the laser providing an optical signal having one of a plurality of wavelengths. The optical signal from the laser is modulated to create a first wavelength-division multiplexed signal at an output of the transceiver. The optical signal from the laser is also used by a demultiplexer to demultiplexer a second wavelength-division multiplexed signal at an input of the transceiver. The use of the optical signal from the laser in both modulation and demodulation of wavelength-division multiplexed signals results in a transceiver having fewer discrete components resulting in a compact design and reduced costs.
摘要翻译：本发明提供一种收发器，包括发射机部分和接收机部分。发射机部分包括激光器，激光器提供具有多个波长中的一个的光信号。来自激光器的光信号被调制以在收发器的输出处产生第一波分复用信号。来自激光器的光信号也被解复用器使用，以在收发器的输入端解复用第二波分复用信号。在波分复用信号的调制和解调中使用来自激光器的光信号导致具有较少分立组件的收发器，导致紧凑的设计并降低了成本。

5. 发明授权

US10012797B1 Monolithic photonic integrated circuit (PIC) with a plurality of integrated arrays of laser sources and modulators employing an extended identical active layer (EIAL) 有权
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
IPC分类号： G02B6/12 , G02B6/293
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.

6. 发明授权

US08548333B2 Transceiver photonic integrated circuit 有权
标题翻译：收发器光子集成电路
公开(公告)号：US08548333B2
公开(公告)日：2013-10-01
申请号：US12753833
申请日：2010-04-02
申请人： Radhakrishnan L. Nagarajan , Masaki Kato , Fred A. Kish, Jr. , David F. Welch , Charles H. Joyner
发明人： Radhakrishnan L. Nagarajan , Masaki Kato , Fred A. Kish, Jr. , David F. Welch , Charles H. Joyner
IPC分类号： H04B10/00
CPC分类号： H04J14/02 , H04B10/40 , H04J14/06
摘要： The present invention provides for a transceiver comprising a transmitter portion and a receiver portion. The transmitter portion includes a laser, the laser providing an optical signal having one of a plurality of wavelengths. The optical signal from the laser is modulated to create a first wavelength-division multiplexed signal at an output of the transceiver. The optical signal from the laser is also used by a demultiplexer to demultiplexer a second wavelength-division multiplexed signal at an input of the transceiver. The use of the optical signal from the laser in both modulation and demodulation of wavelength-division multiplexed signals results in a transceiver having fewer discrete components resulting in a compact design and reduced costs.
摘要翻译：本发明提供一种收发器，包括发射机部分和接收机部分。发射机部分包括激光器，激光器提供具有多个波长中的一个的光信号。来自激光器的光信号被调制以在收发器的输出处产生第一波分复用信号。来自激光器的光信号也被解复用器使用，以在收发器的输入端解复用第二波分复用信号。在波分复用信号的调制和解调中使用来自激光器的光信号导致具有较少分立组件的收发器，导致紧凑的设计并降低了成本。

7. 发明授权

US08233510B2 Dual output laser source 有权
标题翻译：双输出激光源
公开(公告)号：US08233510B2
公开(公告)日：2012-07-31
申请号：US12363826
申请日：2009-02-02
申请人： Charles H. Joyner , Radhakrishnan L. Nagarajan , Peter W. Evans , Masaki Kato
发明人： Charles H. Joyner , Radhakrishnan L. Nagarajan , Peter W. Evans , Masaki Kato
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。

8. 发明授权

US08111996B2 Compact optical multiplexer and demultiplexer 有权
标题翻译：紧凑型光复用器和解复用器
公开(公告)号：US08111996B2
公开(公告)日：2012-02-07
申请号：US12391027
申请日：2009-02-23
申请人： Masaki Kato , Charles H. Joyner , Radhakrishnan L. Nagarajan , Peter W. Evans
发明人： Masaki Kato , Charles H. Joyner , Radhakrishnan L. Nagarajan , Peter W. Evans
IPC分类号： H04B10/00
CPC分类号： G02B6/12016 , G02B6/12019
摘要： Consistent with the present disclosure, an arrayed waveguide grating (AWG) is provided that includes first inputs and second inputs. Each of the first inputs receives a corresponding one of a plurality of first optical signals, each of which has a corresponding one of a plurality of wavelengths. Second inputs are also provided, such that each second input is preferably provided between two adjacent first inputs. Each of the second inputs receives a corresponding one of a plurality of second optical signals, and each of the second plurality of optical signals has a corresponding one of those wavelengths. Each of the first plurality of optical signals, however, has a first polarization and each of the second plurality of optical signals has a second polarization different than the first polarization. Since the first optical signals are supplied through AWG inputs that are offset from the inputs that receives second optical signals, the first optical signals are supplied at a first AWG output that is spaced from a second AWG output that supplies the second optical signals. The second optical signals are supplied through the second output even though the second optical signals have the same (or substantially the same) wavelengths as the first optical signals. Accordingly, a single AWG may be provided to multiplex both first and second optical signals, thereby simplifying PIC design.
摘要翻译：根据本公开，提供了包括第一输入和第二输入的阵列波导光栅（AWG）。每个第一输入接收多个第一光信号中的相应的一个，每个第一光信号具有多个波长的对应的一个。还提供第二输入，使得每个第二输入优选地设置在两个相邻的第一输入之间。每个第二输入接收多个第二光信号中的相应一个，并且第二多个光信号中的每一个具有这些波长中的相应一个。然而，第一多个光信号中的每一个具有第一偏振，并且第二多个光信号中的每一个具有不同于第一偏振的第二偏振。由于通过从接收第二光信号的输入偏移的AWG输入提供第一光信号，所以第一光信号在与提供第二光信号的第二AWG输出间隔开的第一AWG输出端提供。即使第二光信号具有与第一光信号相同（或基本相同）的波长，第二光信号也通过第二输出提供。因此，可以提供单个AWG来复用第一和第二光信号，从而简化PIC设计。

9. 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.

10. 发明授权

US08705904B2 Photonic integrated circuits having chirped elements 有权
标题翻译：具有啁啾元件的光子集成电路
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
IPC分类号： G02B6/12 , H04J14/02 , H04B10/04 , H04B10/12
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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