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1. 发明申请

US20150104195A1 WORKING POINT CONTROLLING DEVICE AND METHOD FOR APPLYING MZ MODULATOR 有权
标题翻译：工作点控制装置和应用MZ调制器的方法
公开(公告)号：US20150104195A1
公开(公告)日：2015-04-16
申请号：US14401700
申请日：2013-05-22
申请人： Wuhan Telecommunication Devices Co., Ltd.
发明人： Yi Hu , Liang Cai , Hui Zou , Jin Yang , Yang Kuang
IPC分类号： H04B10/548
CPC分类号： H04B10/548 , G02F1/0123 , G02F2001/212 , H04B10/50575
摘要： Provided is a working point controlling device and method for applying MZ modulator, which includes: a light modulator; a transimpedance amplifier, transmits current outputted by PD of the modulator into voltage signal; a low-noise amplifier, detects low-frequency signal and amplifies the signal, in order to improve the signal/noise ratio; a high Q band-pass filter, detects error signal and amplifies the signal, in order to improve the signal/noise ratio; a first power level conditioning, performs power level condition on error signal of phase, in order that signal output meets A/D input rang; a micro processor, generates low-frequency signal and finishes software synchronization detection wave and ratio integration PI adjusting algorithm; a second power level conditioning, finishes D/A output voltage condition, in order that D/A output is able to meet direct current offset whole controlling range power voltage range of the light modulator. Applying present invention, the problems, that the hardware controlling circuit of current MZ modulator offset point is complex and controlling accuracy is not high, can be resolved.
摘要翻译：提供了一种应用MZ调制器的工作点控制装置和方法，其包括：光调制器; 跨阻抗放大器将调制器的PD输出的电流传输到电压信号中; 低噪声放大器，检测低频信号并放大信号，以提高信号/噪声比; 高Q带通滤波器，检测误差信号并放大信号，以提高信噪比; 第一功率电平调节，在相位误差信号上执行功率电平状态，以使信号输出满足A / D输入范围; 微处理器，生成低频信号，完成软件同步检波和比例积分PI调整算法; 第二功率电平调节，完成D / A输出电压条件，以便D / A输出能够满足光调制器的直流偏移整个控制范围的电源电压范围。应用本发明，可以解决当前MZ调制器偏移点的硬件控制电路复杂且控制精度不高的问题。

2. 发明申请

US20220216921A1 Wavelength Locking Optical Module, Device, And Wavelength Locking Method 有权
公开(公告)号：US20220216921A1
公开(公告)日：2022-07-07
申请号：US17438093
申请日：2019-12-13
申请人： Wuhan Telecommunication Devices Co., Ltd
发明人： Shunli Zhou , Hui Zou , Chenggang Liu , Qinlian Bu
IPC分类号： H04B10/572 , H04B10/516 , H04B10/564
摘要： The present invention relates to the technical field of optical communications, and particularly relates to a wavelength locking optical module, a device, and a wavelength locking method. The optical module comprises a DSP unit, a TOSA, and a ROSA. The DSP unit has a signal output terminal connected to the TOSA and a signal input terminal connected to the ROSA. A TEC is provided within the TOSA, and is used to adjust a temperature according to a control signal sent from the DSP unit and accordingly adjust a emission wavelength of the TOSA. An optical filter is provided within the ROSA and used to filter a wave, such that light having a pre-determined wavelength passes through the filter and is converted into an electrical signal and output to the DSP unit. The DSP unit calculates an optical power according to the received electrical signal, and determines wavelength control of the TOSA according to an optical power change. The present invention has the optical filter provided within the ROSA, combines an original optical detection capability of the ROSA and a signal processing capability of the DSP unit to monitor a wavelength change, and adjusts a wavelength by means of the TEC, thereby reducing TOSA volume, simplifying processes and reducing costs.

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