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frequency modulation response
相关语句
  频率调制响应
     Based on the theoretical model of wavelength conversion using semiconductor laser, the frequency modulation response of wavelength conversion is discussed utilizing rate equation under the small-signal analysis.
     本文基于半导体激光器实现波长转换的理论模型,采用小信号分析方法,利用速率方程求解了基于光纤光栅外腔半导体激光器实现波长转换的频率调制响应特性,并重点分析了光子寿命对高频特性的影响。
短句来源
     (4). We made a detail study to the characteristics of the intrinsic and parasiticfrequency modulation response of LDs, and finished a systemic discussion to the main factors affecting the characteristics of the intrinsic and parasitic frequency modulation response.
     (4)、详细研究了半导体激光器的本征和寄生频率调制响应特性,并对影响半导体激光器的本征和寄生频率调制响应的主要因素作了系统的探讨。
短句来源
     This paper in detail discussed important properties of two-segment (two-electrode) distributed feedback(DFB)laser, among include tuning theory, frequency modulation response, and frequency switching speed.
     详细讨论了两节(两电极)分布反馈(DFB)激光器的重要特性,其中包括调谐理论、频率调制响应以及频率交换速率。
短句来源
     A theoretical model of wavelength conversion based on semiconductor laser is established. The frequency modulation response of wavelength conversion is discussed by using rate equation under the small signal analysis.
     提出了基于半导体激光器实现波长转换的理论模型 ,采用小信号分析方法 ,利用速率方程求解了波长转换的频率调制响应特性。
短句来源
     The frequency modulation response of wavelength conversion was discussed under the small-signal analysis.
     并针对该理论模型,采用小信号分析方法讨论了波长转换的频率调制响应特性;
短句来源
  频率调制响应特性
     Based on the theoretical model of wavelength conversion using semiconductor laser, the frequency modulation response of wavelength conversion is discussed utilizing rate equation under the small-signal analysis.
     本文基于半导体激光器实现波长转换的理论模型,采用小信号分析方法,利用速率方程求解了基于光纤光栅外腔半导体激光器实现波长转换的频率调制响应特性,并重点分析了光子寿命对高频特性的影响。
短句来源
     (4). We made a detail study to the characteristics of the intrinsic and parasiticfrequency modulation response of LDs, and finished a systemic discussion to the main factors affecting the characteristics of the intrinsic and parasitic frequency modulation response.
     (4)、详细研究了半导体激光器的本征和寄生频率调制响应特性,并对影响半导体激光器的本征和寄生频率调制响应的主要因素作了系统的探讨。
短句来源
     A theoretical model of wavelength conversion based on semiconductor laser is established. The frequency modulation response of wavelength conversion is discussed by using rate equation under the small signal analysis.
     提出了基于半导体激光器实现波长转换的理论模型 ,采用小信号分析方法 ,利用速率方程求解了波长转换的频率调制响应特性
短句来源
     The frequency modulation response of wavelength conversion was discussed under the small-signal analysis.
     并针对该理论模型,采用小信号分析方法讨论了波长转换的频率调制响应特性;
短句来源
  “frequency modulation response”译为未确定词的双语例句
     A New Method Based on Subtraction for Simulating a High Frequency Modulation Response of a Semiconductor Laser
     基于扣除法的半导体激光器高频响应仿真新方法
短句来源
     A new simulation method is proposed. The method is based on analysis of the high frequency modulation response of a laser by utilizing rate equations and an equivalent circuit model. It uses subtraction to extract the intrinsic response and to estimate the frequency response of the laser during simulation.
     基于激光器速率方程和等效电路模型对激光器高频响应特性进行分析,提出了一种采用激光器频率响应扣除法提取有源区本征响应和预测激光器整体频率响应的仿真新方法.
短句来源
     Numerical simulation showed that high frequency modulation response of the device was mainly dependent on the lifetime of photon but less on the biased current.
     数值分析结果表明该类型激光器的调制响应特性主要取决于等效光子寿命,受偏置电流影响不大.
短句来源
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  frequency modulation response
Combining the carrier and thermal effects, full frequency modulation response of a GSCR laser is simulated and is compared to measurements.
      


This paper in detail discussed important properties of two-segment (two-electrode) distributed feedback(DFB)laser, among include tuning theory, frequency modulation response, and frequency switching speed. The tuning mechanism of two-segment DFB lasers is explained in terms of the fundamental phase and amplitude reflection properties of the waveguide gratings. The wavelength tuning is induced by pure electronic effects by nonuniform current injection. The modulation bandwide of lasers is determined...

This paper in detail discussed important properties of two-segment (two-electrode) distributed feedback(DFB)laser, among include tuning theory, frequency modulation response, and frequency switching speed. The tuning mechanism of two-segment DFB lasers is explained in terms of the fundamental phase and amplitude reflection properties of the waveguide gratings. The wavelength tuning is induced by pure electronic effects by nonuniform current injection. The modulation bandwide of lasers is determined by stimulated carrier lifetime in active range. The FM response and frequency switching is different in static tuning regime of red-shifed and blue-shifed of lasers. For high-speed FSK modulation, the laser should be biased to operate in the blue-shifed regime. The FM response magnitude and phase variation effects laser on the high speed frequency switching.

详细讨论了两节(两电极)分布反馈(DFB)激光器的重要特性,其中包括调谐理论、频率调制响应以及频率交换速率。两节DFB激光器的调谐机理可根据波导光栅反射特性的基本相位和幅度来解释。波长调谐由不均匀电流注入的纯电子效应所引起。激光器的调制带宽由有源区中受激载流子寿命所决定。在激光器红移和蓝移静态调谐状态下,FM响应和频率交换是不同的。对高速FSK调制,激光器应偏置于蓝移状态下工作。FM响应的大小和相位变化影响激光器的高速频率交换。

Performance of high speed coherent optical communication systems has been investigated. A novel frequency tracking/locking automatical fre quency control (clock frequency tracking AFC, CFT AFC) scheme has been presented. The first Gb/s speed coherent optical communication system of China (1.1 Gb/s FSK optical communication system) has been achieved. The achievements of this paper are as follows: (1) Performance of coherent optical communication system has been investigated. A set of expressions...

Performance of high speed coherent optical communication systems has been investigated. A novel frequency tracking/locking automatical fre quency control (clock frequency tracking AFC, CFT AFC) scheme has been presented. The first Gb/s speed coherent optical communication system of China (1.1 Gb/s FSK optical communication system) has been achieved. The achievements of this paper are as follows: (1) Performance of coherent optical communication system has been investigated. A set of expressions are deduced. In the expressions, the effects of the LD line width, waveform of modulation signal, the signal phase jitter, intersymbol interference (ISI) and various kinds of noises are comprehensively included for the first time. (2) The jitter performance of coherent optical communication system is analyzed for the first time. The timing jitter theory of coherent optical communication system is achieved. (3) A novel frequency tracking/locking automatic frequency control (clock frequency tracking AFC, CFT AFC) scheme is presented. The scheme has three advantages compared with other AFC schemes: (a) frequency tracking/locking may be achieved efficiently; (b) timing clock may be extracted efficiently; and (c) the circuitry is simpler and steadier. (4) Performance of phase diversity (PD) optical communication systems is analyzed. The BER expressions of PD systems modulated under various kinds of signal waveforms are presented. The power penalties of PD systems resulted from signal phase jitter and ISI are deduced. (5) Performance of the light sources of coherent optical communication (external cavity LD and DFB LD) is analyzed. The non flat FM (frequency modulation) response of LD chip is compensated by external circuitry. The DFB LD module with 4.7 GHz FM response is achieved. (6) Compensation of fiber dispersion in optical communication is investigated. The practical fiber dispersion compensators are achieved. (7) The first Gb/s speed coherent optical Dissertation completed Apr. 1992communication system of China is achieved. The system includes: (a) a 1.1 Gb/s ~ 2.2 Gb/s PRBS high speed signal source; (b) DFB LD modules with 4.7 GHz FM response and 1.1 Gb/s FSK optical transmitter; (c) a low noise preamplifier with 4.2 GHz width; (d) CFT AFC circuitry, which system, CFT AFC scheme not only achieves frequency tracking/locking, but also depressed timing jitter efficiently. In fact, the receiver may extract the timing clock efficiently even received signal with infinite continuous “0”; (e) The LD line width is narrowed by electrical negative feedback of CFT AFC. The characteristics of the system include: (a) the DFB LD modules are taken as the light sources; (b) balanced PIN is taken as photoelectron detector of the receiver; (c) CFT AFC scheme is taken as AFC, timing extracting, and LD line width narrowing; (e) the system speed: 1.1 Gb/s, the wavelength of LD: 1.536 4 μm, the transmission distance: 3.87 km, and the receiver sensitivity: 34.2 dBm (BER=10 9 ). Huang Shouhua Born in Hubei province, 1956, graduated from Physics Department of Nanjing University in 1980. He received the ME degree in Wuhan Research Institute of Posts and Telecom (WRIPT), in 1986. He joined WRIPT in 1986. Since 1988, he has been working towards Ph.D. degree at Beijing University of Posts and Telecom. He is the authors of over 30 journal and conference papers.

Performanceofhighspeedcoherentopticalcommunicationsystemshasbeeninvestigated.Anovelfrequencytracking/lockingautomaticalfreq...

As a key device in ASON (automatic switched optical networks), the study on all optical wavelength converters is becoming a very important project. A theoretical model of wavelength conversion based on semiconductor laser is established. The frequency modulation response of wavelength conversion is discussed by using rate equation under the small signal analysis. The characteristics of wavelength conversion are analyzed in different optical parameters including the injection current, signal average...

As a key device in ASON (automatic switched optical networks), the study on all optical wavelength converters is becoming a very important project. A theoretical model of wavelength conversion based on semiconductor laser is established. The frequency modulation response of wavelength conversion is discussed by using rate equation under the small signal analysis. The characteristics of wavelength conversion are analyzed in different optical parameters including the injection current, signal average power, gain coefficient and so on. Those results are useful to optimal design of the wavelength converter based on semiconductor laser.

作为自动交换光网络中的核心器件 ,全光波长转换器的研究是目前的热点。提出了基于半导体激光器实现波长转换的理论模型 ,采用小信号分析方法 ,利用速率方程求解了波长转换的频率调制响应特性。并初步研究了不同半导体激光器工作电流、码速、输入信号光功率、增益吸收系数条件对波长转换性能的影响。这对于优化基于半导体激光器的全光波长转换器有一定的参考价值

 
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