直接调制

本文用小信号分析的方法，研究了当对半导体激光器（LD）进行直接调制时（动态）LD的量子噪声，首次给出了LD的动态AM与FM噪声谱的解析表达式。

The quantum noise for semiconductor lasers in direct modulation ( dynamic ) is presented using small signal analysis . The analytic expressions for the AM and FM noise spectra are given for the first time .

1.3μmDCPBH激光器的千兆赫直接调制

GHz Direct Modulation of 1.3 μ m DCPBH Lasers

直接调制1.3μmDC－PBH珐珀半导体激光器的非线性动力学研究

Study on Nonlinear Dynamics of Direct Modulated 1 . 3 μ m DC-PBH-Fabry-Perot Laser Diode

基于非致冷直接调制DFB激光器的10Gb/s光发射器

Uncooled DFB Laser-based Directly Modulated 10Gb / s Transmitter

直接调制DFB激光器调制特性的温度补偿技术研究

Study on The Temperature Compensation Technique for Improved Modulation Characteristics of A DFB Laser

可用于LD和LED的输出光功率直接调制，也适用于LD输出光频率调制，具有通用性。

Not only can be used in the optical power output modulation of LD and LED , the driver can also be used in the optical frequency modulation of LD with injection current , it is a general-purpose design .

该光毫米波发生器通过外部光注入以及直接调制较低的射频参考频率来双重锁定FP激光器，从而直接产生稳定的、低噪声的40GHz左右的光毫米波。

The optical mm-wave generator is locked by two sources : the external optical injection and the driven RF reference frequency . Stable optical mm waves with low phase noise are then generated .

针对该问题，讨论了逆匹配滤波干扰，把经雷达匹配滤波处理后需要得到的干扰信号直接调制到DRFM中的雷达发射信号上。

In view of this problem , this paper discusses the converse matching filter jamming , which is to modulate jamming signals needed to radar emitting signals .

发射机采用数字式调制方式，即QAM直接调制上变频方式，相对于其它调制方式可以实现在相同带宽下的高码率传输。

The transmitter adopt QAM modulation mode , which is a directly modulation upper frequency conversion mode , which could afford more high bit rate transmission in the same bandwidth compared to other modulation mode .

在反馈带宽之内激光器的频偏功率比（CPR）减小（1+H）倍，而带宽以外则不受影响，因此这类激光器可用作直接调制FSK相干传输系统光源。

Within the feedback loop bandwidth , the chirp-power-ratio ( CPR ) is reduced by a factor of 1 + H , it shows that this kind of laser can be used as the light source in FSK coherent transmission system .

利用光通信系统设计平台，研究了一种基于直接调制激光器和非零色散位移光纤（NZDSF）的高速粗波分复用（CWDM）系统的优化方案。

A new scheme for optimization of coarse wavelength-division-multiplexing ( CWDM ) system based on directly modulated lasers ( DMLs ) and non-zero dispersion shifted fibers ( NZDSF ) is proposed .

直接调制获得1.3μm半导体激光超短脉冲

Ultra-short pulse obtained from 1.3 μ m semiconductor lasers by direct modulation

直接调制光载无线电系统色散问题的研究

Study on Dispersion in Directly Modulated Radio over Fiber Systems

基于DDS+直接调制的多普勒频移模拟技术研究

Study of Doppler frequency modulation technology based on DDS and direct modulator

激光光源的直接调制特性研究

Research on direct - modulation charateristics of laser source

对大信号直接调制和增益开关半导体激光器进行了实验研究。

The experiment of big signal modulated and gain switched semiconductor Laser are discussed .

高速直接调制激光器的研究进展

The development of high-speed direct - modulated lasers

本文研究的是微波波段的直接调制技术。

In this paper , direct modulation technology working at Microwave band is researched .

直接调制光发射机原理与故障分析

Dir-Modulation Optical Transmitter Theory and Failure Analysis

空间光通信中大功率、高速率直接调制技术的研究

Research on High Power and High Speed Laser Direct Modulation in the Space Optical Communication

它允许用微分的基带I/Q信号直接调制射频信号。

It allows direct modulation of an RFsignal using differential baseband I and Q signals .

对深入了解直接调制半导体激光的特性，具有实用价值。

Detailed knowledge on coherence of a modulating diode laser is provided for practical applications .

主要讨论半导体激光器的直接调制技术（内调制）与外调制技术。

Here we mainly discuss the inner and outer modulation technology of the semiconductor laser .

直接调制的大电流窄脉宽驱动电源是脉冲半导体激光器获得高峰值功率输出的重要保证。

Performance of direct-modulating pulsed diode laser is dependent on large-current and narrow-width pulsed driver circuit .

同时就采用直接调制光源的相位载波零差检测方案时，设计中如何合理选择各相关参数，以达到最佳匹配进行了原理性探讨。

To select various parameters reasonably and match them well are discussed when taking this scheme .

信号直接调制色泵噪声的单模激光光强涨落

Normalized intensity fluctuation of the noise of direct signal modulated colored pump in a single-mode laser

本文分析了直接调制半导体激光的相干性，并予实验证实。

The coherence of a direct modulating diode laser has been analysed and compared with experimental results .

最终证实了光强度直接调制-解调技术可以用来作为新型加速度传感器的解调方法。

Finally confirmed the intensity demodulation technique can be used directly as a new accelerometer demodulation system .

用1.3μm半导体激光器直接调制产生2.1GHz超短光脉冲

2.1 GHz picosecond optical pulse generation from semiconductor laser at 1.3 μ m wavelength by direct modulation

介绍了锁相调频的基本原理，用锁相调频的射频直接调制方法实现了脉冲信号的低抖动传输。

The low jitter transmission of pulse signals is realized by direct RF-modulation based on PLL frequency modulation .