利用数值模拟的方法研究了电流调制下偏置电流和调制频率对垂直腔面发射半导体激光器(VCSEL)混沌动力学特性的影响。
The influence of bias current and modulation frequency on chaos dynamics of vertical-cavity surface-emitting laser (VCSEL) subject to direct current modulation is investigated by numerical simulation.
使用MAX038波形发生芯片产生波形，通过修改MAX038相应引脚的参数方便地实现输出波形的频率和占空比及偏置电压参数的调节。
The waveform is generated by MAX038. It is very convenient to adjust the frequency, duty cycle and offset voltage of the waveform by changing parameters of the corresponding pins of the chip.
提出了次镜支撑的偏置十字型中心结构，该结构具有较高的谐振频率，因此可以用于大口径望远镜中。
An offset cross structure for supporting secondary mirror is proposed. The structure has a higher resonance frequency so it can be applied to large-aperture telescope.
当微波调制频率及功率一定时，可方便地调节直流偏置电压来改变各阶光波的强度。
It is convenient to change the optical intensity of the sidebands by tuning the DC bias voltage while the microwave modulation frequency and power are fixed.
理论分析表明频移幅度与调制频率、时间常数和半导体激光器的偏置电流等物理量有关。
It is made clear through the theoretical analysis that the frequency shift is dependent on the modulation frequency, thermal time constant, bias current of the laser diode and so on.
而在横向偏置相同的条件下，倾角越大，基模电场的相位随频率的变化越平缓，幅度则正好相反。
For a fixed offset, frequency response of the phase of dominant aperture field mode tends to be smoother with the increase of tilt whereas converse conclusion can be drawn for that of the amplitude.
我们发现磁导率及其共振频率均可以通过直流偏置磁场进行调节，并且在一定条件下出现双稳特性。
We find that the permeability and the resonance frequency can be adjusted by the DC bias magnetic field, and the bistable characteristic arises under certain conditions.
在比较宽的频率偏置范围内从实验上检验了相位循环方法的有效性。
In a large range of resonance offsets, the efficiency of the phase cycling method has been tested experimentally.
实验数据表明，光强调制度随激光器偏置电流的增加而加深，随调制频率的升高而减小。
Experimental data show that the intensity modulation depth increases with the bias current of LD. When the modulation frequency increases, the intensity modulation depth decreases.
扫描 探针 显微镜 -d10yb同步器，提供自动频率和电压匹配使用离散输出偏置信号。
The SPM-D10YB synchronizer provides automatic frequency and voltage matching using discrete output bias signals.
切合实际器件特性可以分析根据实际营运情况，由不同检测频率，测试信号水平和直流偏置。
Realistic device characteristics can be analyzed under actual operating conditions by varying the test frequency, test signal level, and dc bias.
研究表明：偏置直流的增加，降低了材料的磁导率，提高了截止频率，并且在一定偏置直流范围内，磁导率呈线性变化。
The results show that permeability decreases and cut-off frequency increases with the increase of DC bias. Permeability varies linearly in the certain range.
通过一系列的分析，找到了单自由度磁轴承系统前四阶共振频率随轴向磁隙和偏置电流的变化规律曲线；
Through the analysis series, found the curve for former fourth-order magnetic resonance frequency of single degree of freedom magnetic bearing system changes with the axial gap and bias current;
偏置式驱动轮与万向轮相结合，增加车子在操作过程中的稳定性，同时减少了万向轮的维修频率。
Offset driving wheel in combination with castor wheel increase stability of truck during lifting, while minimize the maintenance frequency compared to a single central wheel.
测距作为上行链路调整时间偏置、功率信息和载波频率的一种方法，对系统起了很大的作用。
As a method of the adjustment of time offset, power information and carrier frequency offset in the uplink, ranging plays an important role in the system.
从互易性偏置调制的机理出发，将对本征频率的测量转化为对无效调制光功率响应的尖峰脉冲的测量；根据光功率响应机理，将对半波电压的测量转化为求有效调制光功率最小值。
The method comes from the mechanism of reciprocal shift modulation, which transforms the measuring of eigenfrequency into measuring the spike pulse responding to ineffective-modulation optic power.
从互易性偏置调制的机理出发，将对本征频率的测量转化为对无效调制光功率响应的尖峰脉冲的测量；根据光功率响应机理，将对半波电压的测量转化为求有效调制光功率最小值。
The method comes from the mechanism of reciprocal shift modulation, which transforms the measuring of eigenfrequency into measuring the spike pulse responding to ineffective-modulation optic power.
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