公开(公告)号：US20120155799A1

公开(公告)日：2012-06-21

申请号：US13324251

申请日：2011-12-13

申请人： Kalpendu Shastri ,  Raymond Nering

发明人： Kalpendu Shastri ,  Raymond Nering

IPC分类号： G02B6/12

CPC分类号： G02B6/4246 ,  G02B6/305 ,  G02B6/42 ,  G02B6/421 ,  G02B6/4213

摘要： A silicon-based opto-electronic circuit is formed to exhibit reduced polarization-dependent loss by strategically placing the photodetecting device as close as possible to the entry point of the optical signal into the opto-electronic circuit arrangement. While the incoming optical signal will include both TE and TM modes, by minimizing the length of the optical waveguide path along which the signal must propagate before reaching a photodetector, the attenuation associated with TM mode signal will be negligible.

摘要翻译： 形成硅基光电子电路，通过将光电检测器件尽可能靠近光信号的入射点策略地放置在光电子电路装置中，显示出减小的偏振相关损耗。 当入射光信号将包括TE和TM模式时，通过最小化在到达光电检测器之前信号必须传播的光波导路径的长度，与TM模式信号相关联的衰减将是可忽略的。

公开(公告)号：US08320720B2

公开(公告)日：2012-11-27

申请号：US12856144

申请日：2010-08-13

申请人： Mark Webster ,  Anujit Shastri ,  Kalpendu Shastri

发明人： Mark Webster ,  Anujit Shastri ,  Kalpendu Shastri

IPC分类号： G02B6/12

CPC分类号： G02F1/0121 ,  G02F1/2257 ,  G02F2001/0152 ,  H04B10/5051 ,  H04B10/5053 ,  H04B10/5055 ,  H04B10/516

摘要： A silicon-based optical modulator is configured as a multi-segment device that utilizes a modified electrical data input signal format to address phase modulation nonlinearity and attenuation problems associated with free-carrier dispersion-based modulation. The modulator is formed to include M separate segments and a digital signal encoder is utilized to convert an N bit input data signal into a plurality of M drive signals for the M modulator segments, where M≧2N/2. The lengths of the modulator segments may also be adjusted to address the nonlinearity and attenuation problems. Additional phase adjustments may be utilized at the output of the modulator (beyond the combining waveguide).

摘要翻译： 硅基光调制器被配置为多段装置，其利用修改的电数据输入信号格式来解决与自由载波色散调制相关的相位调制非线性和衰减问题。 调制器被形成为包括M个单独的段，并且使用数字信号编码器将N位输入数据信号转换成用于M个调制器段的多个M个驱动信号，其中M≥N2N / 2。 调制器段的长度也可以被调整以解决非线性和衰减问题。 可以在调制器的输出（超过组合波导）的情况下使用附加的相位调整。

公开(公告)号：US20110044573A1

公开(公告)日：2011-02-24

申请号：US12856144

申请日：2010-08-13

申请人： Mark Webster ,  Anujit Shastri ,  Kalpendu Shastri

发明人： Mark Webster ,  Anujit Shastri ,  Kalpendu Shastri

IPC分类号： G02F1/035

CPC分类号： G02F1/0121 ,  G02F1/2257 ,  G02F2001/0152 ,  H04B10/5051 ,  H04B10/5053 ,  H04B10/5055 ,  H04B10/516

摘要： A silicon-based optical modulator is configured as a multi-segment device that utilizes a modified electrical data input signal format to address phase modulation nonlinearity and attenuation problems associated with free-carrier dispersion-based modulation. The modulator is formed to include M separate segments and a digital signal encoder is utilized to convert an N bit input data signal into a plurality of M drive signals for the M modulator segments, where M≧2N/2. The lengths of the modulator segments may also be adjusted to address the nonlinearity and attenuation problems. Additional phase adjustments may be utilized at the output of the modulator (beyond the combining waveguide).

摘要翻译： 硅基光调制器被配置为多段设备，其利用修改的电数据输入信号格式来解决与自由载波色散调制相关的相位调制非线性和衰减问题。 调制器被形成为包括M个单独的段，并且使用数字信号编码器将N位输入数据信号转换成用于M个调制器段的多个M个驱动信号，其中M≥N2N / 2。 调制器段的长度也可以被调整以解决非线性和衰减问题。 可以在调制器的输出（超过组合波导）的情况下使用附加的相位调整。