Patent


申请号
CN201510331085.6
专利链接
http://www.soopat.com/Patent/CN201510331085
专利名称
高速LED光通信调制器
英文名称
High-speed LED optical modulator
申请日
2015-06-15
主分类号
H04B10/116
分类号
H04B10/116; H04B10/50; H05B37/02
申请人
南京大学
公告号
CN105050245B
当前法律状态
授权
专利有效性
有效
法律状态
法律状态公告日:20151111;法律状态:公开;描述信息:公开;法律状态公告日:20151209;法律状态:实质审查的生效;描述信息:实质审查的生效IPC(主分类):H05B 37/02;  申请日:20150615;法律状态公告日:20170606;法律状态:授权;描述信息:授权;
专利类型
发明授权
公告日
2017-06-06
专利代理机构
北京市京大律师事务所 11321
代理人
王凝; 金凤
地址
210093 江苏省南京市鼓楼区汉口路22号
优先权
国省代码
中国
摘要
本发明公开了一种高速LED光通信调制器,包括控制单元和可变供电单元,所述可变供电单元为可正负方向切换的能量供应单元;控制单元产生开关和时序控制信号,以驱动可变供电单元为LED供电;时序控制信号用于通过时序控制来降低能带弯曲,以提高载流子辐射复合;当可变供电单元正向供电时,LED开通,同时使载流子过注入;当可变供电单元反向供电时,LED关断,同时使载流子反向注入。还包括用于进一步加速关断的泄放通路。本发明通过控制对开通时的载流子过注入以及关断时的载流子反向注入,提高了载流子的复合速率,使得开关速度大幅度提高;通过辅助的泄放通路进一步加速关断;通过时序控制降低能带弯曲,提高载流子辐射复合。
主权项
一种高速LED光通信调制器,包括LED、控制单元和可变供电单元;其特征在于:所述可变供电单元为可正负方向切换的能量供应单元;所述控制单元产生开关和时序控制信号,以驱动可变供电单元为LED供电;所述时序控制信号用于通过时序控制来降低能带弯曲,以提高载流子辐射复合;当可变供电单元正向供电时,LED开通,同时使载流子过注入;当可变供电单元反向供电时,LED关断,同时使载流子反向注入;反向供电并非在整个关断过程加载而仅仅是一小段时间,以避免能带弯曲所带来的辐射复合率大大下降的问题从而提高光的关断速率。
发明人
陈敦军; 雷建明; 谢自力; 张荣; 郑有炓
inpadoc同族
厦大机构
更新时间
20171214
摘要_en
The invention discloses a high-speed LED optical communication modulator. The high-speed LED optical communication modulator comprises a control unit and a variable power supply unit; the variable power supply unit is an energy supply unit capable of switching in the positive and negative directions; the control unit generates switching and sequential control signals so that the variable power supply unit is driven to supply power to an LED; the sequential control signals are used for reducing the bending of an energy band via sequential control so that radiative recombination of carriers is improved; when the variable power supply supplies power in the positive direction, the LED is turned on, and the carriers are over-injected; and when the variable power supply supplies power in the reverse direction, the LED is turned off, and the carriers are injected in a reverse manner. The high-speed LED optical communication modulator also comprises a discharge circuit used for further accelerating the turn-off. According to the high-speed LED optical communication modulator, the over-injection of the carriers during turn-on and reverse injection of the carriers during turn-off are controlled so that the recombination rate of the carriers is increased, and the switching speed is greatly increased; the turn-off is further accelerated via the auxiliary discharge circuit; and the bending of the energy band is reduced via sequential control, and the radiative recombination of the carriers is improved.

Back to List