发明名称 |
PRE-EQUALISATION OPTICAL TRANSMITTER AND PRE-EQUALISATION OPTICAL FIBRE TRANSMISSION SYSTEM |
摘要 |
Provided is a pre-equalization optical transmitter capable of generating a pre-equalized RZ-type optical signal with a simple and low-cost structure. Further provided is a pre-equalization optical fiber transmission system in which dispersion is appropriately managed by using the pre-equalization optical transmitter. The pre-equalization optical transmitter includes: an RZ conversion circuit (11) for generating an RZ-type input data sequence based on an NRZ-type input data sequence (D (t)) and a clock (p (t)) that is twice the speed of the NRZ-type input data sequence; a digital filter (12) 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 (13a, 13b) for performing D/A conversion on the pre-equalized data to output analog pre-equalized data; and a vector modulator (15) for modulating light from a laser light source (14) based on the analog pre-equalized data to output an RZ-type optical signal. |
申请公布号 |
EP2495889(A1) |
申请公布日期 |
2012.09.05 |
申请号 |
EP20100826555 |
申请日期 |
2010.10.19 |
申请人 |
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 |
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代理人 |
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主权项 |
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地址 |
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