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1. 发明申请

WO2011119897A2 PHASE SHIFT KEYED OPTICAL COMMUNICATIONS 审中-公开
标题翻译：相移键控光通信
公开(公告)号：WO2011119897A2
公开(公告)日：2011-09-29
申请号：PCT/US2011029882
申请日：2011-03-24
申请人： MASSACHUSETTS INST TECHNOLOGY , CAPLAN DAVID O , SPELLMEYER NEAL W , HAMILTON SCOTT A , BOROSON DON M , RAO HEMONTH G , NORVIG MARC C , ROBINSON BRYAN S
发明人： CAPLAN DAVID O , SPELLMEYER NEAL W , HAMILTON SCOTT A , BOROSON DON M , RAO HEMONTH G , NORVIG MARC C , ROBINSON BRYAN S
IPC分类号： H04B10/02 , H04L27/18
CPC分类号： E21B49/00 , E21B47/0002 , G01V1/40 , H04B10/5561 , H04B10/677 , H04L27/2075 , H04L27/2096 , H04L27/223 , H04L27/2601
摘要： A burst-mode differential phase shift keying (DPSK) communications system according to an embodiment of the present invention enables practical, power-efficient, multi-rate communications between an optical transmitter and receiver. An embodiment of the system utilizes a single interferometer in the receiver with a relative path delay that is matched to the DPSK symbol rate of the link. DPSK symbols are transmitted in bursts, and the data rate may be varied by changing the ratio of the burst-on time to the burst-off time. This approach offers a number of advantages over conventional DPSK implementations, including near- optimum photon efficiency over a wide range of data rates, simplified multi-rate transceiver implementation, and relaxed transmit laser line-width requirements at low data rates.
摘要翻译：根据本发明实施例的突发模式差分相移键控（DPSK）通信系统实现了光发射器和接收器之间的实用，功率高效的多速率通信。该系统的实施例在接收机中利用与链路的DPSK符号速率相匹配的相对路径延迟的单个干涉仪。 DPSK符号以突发形式传输，并且可以通过改变突发时间与突发关闭时间的比率来改变数据速率。与传统的DPSK实现相比，这种方法提供了许多优点，包括在宽范围的数据速率下接近最佳的光子效率，简化的多速率收发器实现以及在低数据速率下松弛发射激光器线宽要求。

2. 发明申请

WO03052988A2 APPARATUS AND METHOD FOR DEMULTIPLEXING A POLARIZATION-MULTIPLEXED SIGNAL 审中-公开
标题翻译：用于解复用多极化信号的装置和方法
公开(公告)号：WO03052988A2
公开(公告)日：2003-06-26
申请号：PCT/US0240143
申请日：2002-12-13
申请人： AXE INC , LAGASEE MICHAEL J , RAO HEMONTH G , HALL KATHERINE L , KESLER MORRIS P
发明人： LAGASEE MICHAEL J , RAO HEMONTH G , HALL KATHERINE L , KESLER MORRIS P
IPC分类号： H04J14/06 , H04J14/08 , H04L7/00
CPC分类号： H04J14/083 , H04J14/06 , H04J14/08
摘要： An apparatus and method for demultiplexing a time and polarization multiplexed signal are described. The multiplexed signal is a combination of component signals, each of which is characterized by a polarization. The demultiplexer of the system includes an input interface over which the signal is received. A polarization demultiplexer receives the multiplexed signal and polarization demultiplexes the signal. Next, a time-demultiplexing stage time-demultiplexes the polarization-demultiplexed signal to recover the original component signals. A clock recovery circuit recovers the clock from the polarization-demultiplexed signal before time demultiplexing.
摘要翻译：描述用于解复用时间和偏振复用信号的装置和方法。多路复用信号是分量信号的组合，每个分量信号的特征在于极化。该系统的解复用器包括接收信号的输入接口。偏振解复用器接收多路复用信号并对信号进行极化解复用。接下来，时间分离级对偏振解复用信号进行时间解复用以恢复原始分量信号。在时分复用之前，时钟恢复电路从偏振解复用信号中恢复时钟。

3. 发明申请

WO2003085423A2 RECONFIGURABLE TIME-SLOT ROUTER 审中-公开
标题翻译：可重新连接的时隙路由器
公开(公告)号：WO2003085423A2
公开(公告)日：2003-10-16
申请号：PCT/US2003/008958
申请日：2003-03-21
申请人： AXE, INC. , RAO, Hemonth, G. , HALL, Katherine, L. , LAGASSE, Michael, J.
发明人： RAO, Hemonth, G. , HALL, Katherine, L. , LAGASSE, Michael, J.
IPC分类号： G02B
CPC分类号： H04Q11/0005 , H04Q2011/0015 , H04Q2011/0024 , H04Q2011/0033 , H04Q2011/0039 , H04Q2011/0052
摘要： An optical signal router for communication systems is described. The optical signal router includes a switch driver that generates a modulation drive signal containing a linear combination of a DC offset voltage and at least three electrical signals. In one embodiment, each of the at least three electrical signals has a frequency that is a unique integral multiple of a bit-rate. The optical signal router also includes an optical switch having an electrical modulation input that is electrically coupled to the output of the switch driver. The optical switch also includes an optical input that receives a time-division multiplexed optical signal including a plurality of optical subchannels. In one embodiment, each of the plurality of optical subchannels includes the bit-rate. The optical switch routes a subset of the plurality of optical subchannels to an optical output in response to the modulation drive signal.
摘要翻译：描述了用于通信系统的光信号路由器。光信号路由器包括产生包含DC偏移电压和至少三个电信号的线性组合的调制驱动信号的开关驱动器。在一个实施例中，至少三个电信号中的每一个具有作为比特率的唯一整数倍的频率。光信号路由器还包括具有电耦合到开关驱动器的输出的电调制输入的光开关。光开关还包括光输入，其接收包括多个光子通道的时分复用光信号。在一个实施例中，多个光学子信道中的每一个包括比特率。响应于调制驱动信号，光开关将多个光子信道的子集路由到光输出。

4. 发明申请

WO02103440A3 MULTI-STAGE POLARIZATION TRANSFORMER 审中-公开
标题翻译：多级极化变压器
公开(公告)号：WO02103440A3
公开(公告)日：2003-07-03
申请号：PCT/US0216814
申请日：2002-05-29
申请人： AXE INC , LAGASSE MICHAEL , KESLER MORRIS P , WEITZ DAVID M , FRIDBERG MIKHAIL , RAO HEMONTH G , SHULTZ JEFFREY A , WELDON KEVIN
发明人： LAGASSE MICHAEL , KESLER MORRIS P , WEITZ DAVID M , FRIDBERG MIKHAIL , RAO HEMONTH G , SHULTZ JEFFREY A , WELDON KEVIN
IPC分类号： G02F1/01 , H04B10/18
CPC分类号： G02F1/0136
摘要： A multi-stage polarization transformer is described that includes a first polarization transformer stage that receives an optical signal at an input and that generates a first transformed optical signal at an output. The first transformed optical signal has a polarization state within a first predetermined range. A second polarization transformer stage receives the first transformed optical signal at an input and generates a second transformed optical signal at an output. The second transformed optical signal has a polarization state within a second predetermined range. The second predetermined range is less than the first predetermined range.
摘要翻译：描述了一种多级偏振变换器，其包括第一偏振变换器级，其在输入处接收光信号，并在输出端产生第一变换光信号。第一变换光信号具有在第一预定范围内的偏振状态。第二偏振变换器级在输入处接收第一变换光信号，并在输出端产生第二变换光信号。第二变换光信号具有在第二预定范围内的偏振状态。第二预定范围小于第一预定范围。

5. 发明申请

WO2011119897A3 PHASE SHIFT KEYED OPTICAL COMMUNICATIONS 审中-公开
公开(公告)号：WO2011119897A3
公开(公告)日：2011-09-29
申请号：PCT/US2011/029882
申请日：2011-03-24
申请人： MASSACHUSETTS INSTITUTE OF TECHNOLOGY , CAPLAN, David, O. , SPELLMEYER, Neal, W. , HAMILTON, Scott, A. , BOROSON, Don, M. , RAO, Hemonth, G. , NORVIG, Marc, C. , ROBINSON, Bryan, S.
发明人： CAPLAN, David, O. , SPELLMEYER, Neal, W. , HAMILTON, Scott, A. , BOROSON, Don, M. , RAO, Hemonth, G. , NORVIG, Marc, C. , ROBINSON, Bryan, S.
IPC分类号： H04B10/02 , H04L27/18
摘要： A burst-mode differential phase shift keying (DPSK) communications system according to an embodiment of the present invention enables practical, power-efficient, multi-rate communications between an optical transmitter and receiver. An embodiment of the system utilizes a single interferometer in the receiver with a relative path delay that is matched to the DPSK symbol rate of the link. DPSK symbols are transmitted in bursts, and the data rate may be varied by changing the ratio of the burst-on time to the burst-off time. This approach offers a number of advantages over conventional DPSK implementations, including near- optimum photon efficiency over a wide range of data rates, simplified multi-rate transceiver implementation, and relaxed transmit laser line-width requirements at low data rates.

6. 发明申请

WO03052988A8 APPARATUS AND METHOD FOR DEMULTIPLEXING A POLARIZATION-MULTIPLEXED SIGNAL 审中-公开
标题翻译：用于解复用多极化信号的装置和方法
公开(公告)号：WO03052988A8
公开(公告)日：2004-04-15
申请号：PCT/US0240143
申请日：2002-12-13
申请人： AXE INC , LAGASEE MICHAEL J , RAO HEMONTH G , HALL KATHERINE L , KESLER MORRIS P
发明人： LAGASEE MICHAEL J , RAO HEMONTH G , HALL KATHERINE L , KESLER MORRIS P
IPC分类号： H04J14/06 , H04J14/08 , H04L7/00
CPC分类号： H04J14/083 , H04J14/06 , H04J14/08
摘要： An apparatus and method for demultiplexing a time and polarization multiplexed signal are described. The multiplexed signal is a combination of component signals, each of which is characterized by a polarization. The demultiplexer of the system includes an input interface over which the signal is received. A polarization demultiplexer receives the multiplexed signal and polarization demultiplexes the signal. Next, a time-demultiplexing stage time-demultiplexes the polarization-demultiplexed signal to recover the original component signals. A clock recovery circuit recovers the clock from the polarization-demultiplexed signal before time demultiplexing.
摘要翻译：描述用于解复用时间和偏振复用信号的装置和方法。多路复用信号是分量信号的组合，每个分量信号的特征在于极化。该系统的解复用器包括接收信号的输入接口。偏振解复用器接收多路复用信号并对信号进行极化解复用。接下来，时间分离级对偏振解复用信号进行时间解复用以恢复原始分量信号。在时分复用之前，时钟恢复电路从偏振解复用信号中恢复时钟。

7. 发明申请

WO2003085423A3 RECONFIGURABLE TIME-SLOT ROUTER 审中-公开
公开(公告)号：WO2003085423A3
公开(公告)日：2003-10-16
申请号：PCT/US2003/008958
申请日：2003-03-21
申请人： AXE, INC. , RAO, Hemonth, G. , HALL, Katherine, L. , LAGASSE, Michael, J.
发明人： RAO, Hemonth, G. , HALL, Katherine, L. , LAGASSE, Michael, J.
IPC分类号： H04J14/08
摘要： An optical signal router (100) for communications systems is described. The optical signal router includes a switch driver (104) that generates a modulation drive signal containing a linear combination of a DC offset voltage and at least three electrical signals. In one embodiment, each of the at least three electrical signals has a frequency that is a unique integral multiple of a bit-rate. The optical signal router also includes an optical switch (102) having an electrical modulation input (106) that is electrically coupled to the output (122) of the switch driver. The optical switch also includes an optical input (108) that receives a time-division multiplexed optical signal including a plurality of optical subchannels. In one embodiment, each of the plurality of optical subchannels includes the bitrate. The optical switch routes a subset of the plurality of optical subchannels to an optical output (110, 112) in response to the modulation drive signal.

8. 发明申请

WO2003052988A3 APPARATUS AND METHOD FOR DEMULTIPLEXING A POLARIZATION-MULTIPLEXED SIGNAL 审中-公开
公开(公告)号：WO2003052988A3
公开(公告)日：2003-06-26
申请号：PCT/US2002/040143
申请日：2002-12-13
申请人： AXE, INC. , LAGASEE, Michael, J. , RAO, Hemonth, G. , HALL, Katherine, L. , KESLER, Morris, P.
发明人： LAGASEE, Michael, J. , RAO, Hemonth, G. , HALL, Katherine, L. , KESLER, Morris, P.
IPC分类号： H04J14/06
摘要： An apparatus and method for demultiplexing a time and polarization multiplexed signal are described. The multiplexed signal is a combination of component signals, each of which is characterized by a polarization. The demultiplexer of the system includes an input interface over which the signal is received. A polarization demultiplexer receives the multiplexed signal and polarization demultiplexes the signal. Next, a time-demultiplexing stage time-demultiplexes the polarization-demultiplexed signal to recover the original component signals. A clock recovery circuit recovers the clock from the polarization-demultiplexed signal before time demultiplexing.

9. 发明申请

WO2002103440A2 MULTI-STAGE POLARIZATION TRANSFORMER 审中-公开
标题翻译：多级极化变压器
公开(公告)号：WO2002103440A2
公开(公告)日：2002-12-27
申请号：PCT/US2002/016814
申请日：2002-05-29
申请人： AXE, INC. , LAGASSE, Michael , KESLER, Morris, P. , WEITZ, David, M. , FRIDBERG, Mikhail , RAO, Hemonth, G. , SHULTZ, Jeffrey, A. , WELDON, Kevin
发明人： LAGASSE, Michael , KESLER, Morris, P. , WEITZ, David, M. , FRIDBERG, Mikhail , RAO, Hemonth, G. , SHULTZ, Jeffrey, A. , WELDON, Kevin
IPC分类号： G02F1/01
CPC分类号： G02F1/0136
摘要： A multi-stage polarization transformer is described that includes a first polarization transformer stage that receives an optical signal at an input and that generates a first transformed optical signal at an output. The first transformed optical signal has a polarization state within a first predetermined range. A second polarization transformer stage receives the first transformed optical signal at an input and generates a second transformed optical signal at an output. The second transformed optical signal has a polarization state within a second predetermined range. The second predetermined range is less than the first predetermined range.
摘要翻译：描述了一种多级偏振变换器，其包括第一偏振变换器级，其在输入处接收光信号，并在输出端产生第一变换光信号。第一变换光信号具有在第一预定范围内的偏振状态。第二偏振变换器级在输入处接收第一变换光信号，并在输出端产生第二变换光信号。第二变换光信号具有在第二预定范围内的偏振状态。第二预定范围小于第一预定范围。

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