| 1. | Study on 10 ghz tunable active mode - locking fiber ring la sers
可调谐主动锁模光纤环形激光器研究 |
| 2. | But the stability technique problem of the actively mode - locked fiber laser is not solved
主动锁模光纤激光器要走向实用化,如何保证锁模光纤激光器稳定工作是关键。 |
| 3. | It is a problem which must be solved that how to keep the actively mode - locked fiber laser working stably for long time
这些实验与分析对主动锁模光纤激光器的实用化具有重要的指导意义。 |
| 4. | The prerequisite of actively mode - locked fiber laser stable work is that the modulation signal frequency must be the integral multiple to the cavity resonance frequency
主动锁模光纤激光器稳定工作的前提条件之一是调制信号频率应为腔内纵模间隔的整数倍。 |
| 5. | For the modulation frequency and the cavity are very difficult to maintain matching , so it is difficult to guarantee the long time steady work of actively mode - locked fiber laser
所以不能保证长时间稳定工作,必须采取特殊的措施来稳定主动锁模光纤激光器的腔长。 |
| 6. | Fiber lasers are very sensitive to environmental perturbations such as temperature fluctuations and mechanical vibrations due to their relatively long cavity length when the external environment changing . the cavity drifting produceing the phase noise and amplitude noise , this can cause the output pulse unstablely
但由于主动锁模光纤激光器腔内有较长的光纤,而光纤的长度极易因外界环境的影响而发生漂移,因而调制频率和腔长很难保持匹配。 |
| 7. | The actively mode - locked erbium doped fiber laser is very attractive among those potential sources which can generate broadband tunable near transform - limited pulse with high repetition rate and has been used as the ideal optical transmitter and all optical clock source in the future long - distance communication systems
对于高速光纤通信系统而言,能输出高重复频率的、近极限超短脉冲的主动锁模光纤激光器被认为是未来远程无中继光纤通信系统的理想光源。但其难点是工作稳定性问题。 |
| 8. | The wavelengths are specified by two bragg gratings in pm fibers . the proposed laser can be designed to operate in stable four - wavelength or wavelength switching modes only by simple adjustment of two polarization controllers . two moire bragg gratings in pm fibers are respectively fabricated successfully through stretching and double , triplicate
4 .在2 , 3工作的基础上,在连续光输出的激光器谐振腔内加入调制器进行主动锁模,分别得到了基于侧向应力作用下的光纤光栅、单个保偏光纤光栅、两个保偏光纤光栅进行选频的多波长的锁模光纤激光器。 |
| 9. | Using fiber grating to substitute traditional wavelength - selecting components , the 8nm tuning range is realized at a repetition frequency of 2 . 5ghz . ( 5 ) . the wavelength - tuning methods of an active mode - locked fiber laser using a ld as a modulator are researched , and two tuning methods including temperature tuning
( 4 )对主动锁模光纤激光器的波长调节技术进行了研究,用光纤光栅代替传统的波长选择器件实现了主动锁模光纤激光器的波长调谐,并获得了波长连续调谐范围达8nm 、重复频率2 . 5ghz的稳定的光脉冲输出。 |
| 10. | The actively and passive mode - locked fiber ring laser and two types of photonic switching , slalom ( semiconductor laser amplifier loop mirror ) and uni ( ultrafast nonlinear interferometer ) were developed . this thesis presented the principle and the requirements for the optical of frequency - shift sampling module under common conditions
研制了作为光取样脉冲源的主动锁模和被动锁模光纤激光器；半导体光放大器环镜及超高速非线性干涉仪的光子开关，并进行了频差法光取样、异步光取样及基于时分光取样的光子模数转换的实验研究。 |
