发明名称 |
Method and apparatus for controlling an optical receiver having delay paths |
摘要 |
A control apparatus for controlling an optical receiver having delay paths comprises an optical variable attenuator configured to generate a variable signal and provide the variable signal to the optical receiver; a fine control voltage controller configured to generate a variable fine control voltage and input the variable fine control voltage to one path of the delay paths of the optical receiver; a photo-diode voltage monitor configured to detect a first voltage value and a second voltage value; a bit error rate (BER) checker configured to estimate a bit error rate (BER) according to a signal output from the optical receiver; and a controller configured to set a value of the variable signal and a value of the variable fine control voltage and to estimate the fine control voltage that makes the bit error rate a minimum according to the first voltage value and the second voltage value. |
申请公布号 |
US8755696(B2) |
申请公布日期 |
2014.06.17 |
申请号 |
US201213483599 |
申请日期 |
2012.05.30 |
申请人 |
Electronics and Telecommunications Research Institute |
发明人 |
Lee Jyung-Chan |
分类号 |
H04B10/06 |
主分类号 |
H04B10/06 |
代理机构 |
Nelson Mullins Riley & Scarborough LLP |
代理人 |
Nelson Mullins Riley & Scarborough LLP ;Laurentano, Esq. Anthony A.;Lee, Esq. Lewis |
主权项 |
1. A control apparatus for controlling an optical receiver having delay paths, the control apparatus comprising:
an optical variable attenuator configured to generate a variable signal and provide the variable signal to the optical receiver; a fine control voltage controller configured to generate a variable fine control voltage and input the variable fine control voltage to one path of the delay paths of the optical receiver; a photo-diode voltage monitor configured to detect a first voltage value and a second voltage value which are, respectively, applied to two photo-diodes in the optical receiver; a bit error rate (BER) checker configured to estimate a bit error rate (BER) according to a signal output from the optical receiver; and a controller configured to set a value of the variable signal generated by the optical variable attenuator and a value of the variable fine control voltage generated by the fine control voltage controller and to estimate the fine control voltage that makes the bit error rate a minimum according to the first voltage value and the second voltage value, wherein the controller is configured to identify in a graph made using the acquired information a section in which a first voltage value is greater than a second voltage value and a section in which the second voltage value is greater than the first voltage value, and to adjust a fine control voltage value to be optimized for each section.
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地址 |
Daejeon-si KR |