基本信息:
- 专利标题： 用于光纤信号传输或测量设备的高分辨率数字相位调制器
- 专利标题（英）：High-resolution digital phase modulator for a fiber-optic signal transmission or measuring device
- 申请号：CN200480003993.2 申请日：2004-02-19
- 公开(公告)号：CN1751261B 公开(公告)日：2010-07-28
- 发明人： 冈特·斯帕林格 , 阿方斯·纽泽拉 , 斯文·沃伊特
- 申请人： 利特夫有限责任公司
- 申请人地址： 德国弗赖堡
- 专利权人： 利特夫有限责任公司
- 当前专利权人： 利特夫有限责任公司
- 当前专利权人地址： 德国弗赖堡
- 代理机构： 北京市柳沈律师事务所
- 代理人： 邵亚丽; 李晓舒
- 优先权： 10307526.7 2003.02.21 DE
- 国际申请： PCT/EP2004/001640 2004.02.19
- 国际公布： WO2004/074914 DE 2004.09.02
- 进入国家日期： 2005-08-11
- 主分类号： G02F1/01
- IPC分类号： G02F1/01 ; G01C19/72
The invention relates to a digital phase modulator for a fiber-optic measuring device that has a predetermined total number of electrodes (E0 to E11) of varying length that are disposed in parallel and at both sides of a light guiding path (L) in or on an optical substrate. The aim of the invention is to substantially increase the resolution of such a digital phase modulator while at the same time not increasing the overall length of the modulator. According to the invention, the electrodes (E0 to E11) are disposed along the light guiding path in a plurality of triplets, whereby especially within one triplet two electrodes each that have a subsequent length have the same length ratio which is especially selected to be v = 1.618. In order to further improve the resolution of the modulator with a technology that can be better controlled, especially for least significant (LSB) electrodes, the modulator can be adapted to select the electrode length of said triplet in such a manner that the smallest step size of the initial value range of the phase modulator can be obtained by calculating the difference between at least two larger electrodes. The resolution of the phase modulator can be increased from 9 bits to 11 bits with the same chip size.
公开/授权文献:
- CN1751261A 用于光纤信号传输或测量设备的高分辨率数字相位调制器 公开/授权日：2006-03-22