发明名称 |
PRE-EQUALIZATION OPTICAL TRANSMITTER AND PRE-EQUALIZATION OPTICAL FIBER TRANSMISSION SYSTEM |
摘要 |
A pre-equalization optical transmitter includes: an RZ conversion circuit for generating an RZ-type input data sequence based on an NRZ-type input data sequence and a clock that is twice the speed of the NRZ-type input data sequence; a digital filter for generating pre-equalized data by a convolution operation between the RZ-type input data sequence and a desired transfer function corresponding to the wavelength dispersion of an optical fiber transmission path; D/A converters for performing D/A conversion on the pre-equalized data to output analog pre-equalized data; and a vector modulator for modulating light from a laser light source based on the analog pre-equalized data to output an RZ-type optical signal.
|
申请公布号 |
US2012201546(A1) |
申请公布日期 |
2012.08.09 |
申请号 |
US201013498626 |
申请日期 |
2010.10.19 |
申请人 |
MIZUOCHI TAKASHI;SUGIHARA TAKASHI;MITSUBISHI ELECTRIC CORPORATION |
发明人 |
MIZUOCHI TAKASHI;SUGIHARA TAKASHI |
分类号 |
H04B10/2513;H04B10/50;H04B10/516 |
主分类号 |
H04B10/2513 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|