optical chirp 中文意思是什麼
optical chirp
解釋
光學檔脈沖-
Effect of initial linear chirp on soliton pulse compression in optical fibers
線性源啁啾對孤子脈沖壓縮的影響 -
In high - speed direct optical modulation of laser diodes, the frequency chirp of the modulated signal cannot be eliminated. then the optical external modulators play more and more important role in large capacity optical transmission systems, and have become a subject of intense study
在高速光調制中，直接調制引起的啁啾噪聲難以克服，光外調制器在大容量光纖傳輸系統中，扮演著越來越重要的角色，成為當前的研究熱點。 -
Abstract : based on two order approximation of the variation of refraction index produced by self - action while optical pulses are traveling in kerr - medium, the propagation equation has been solved. furthermore, the strict analytical expressions of the amplitude, width and chirp parameter of chirped gaussian pulse, relative to the propagation distance, are deduced. the solitary wave traveling conditions of fundamental mode gaussian pulse have been discussed
文摘:將光脈沖在克爾介質中自作用產生的折射率變化作二階近似，求解所得到的傳播方程，得到啁啾高斯脈沖幅度，脈沖寬度和周啾參數隨傳播距離變化的嚴格解析解，討論了基模高斯脈沖孤波傳播的條件。 -
The results show that wavelength locates in gain zone of semiconductor optical amplifier, and have higher peak power and proper time delay between the two pulses for the second order super gauss control pulse in semiconductor optical amplifier. a high quality amplified signal pulse can be achieved. the chirp can be reduced notability by using cascading soa in cross gain modulation based on soa, and the distance and the peak power of conversion optical pulse can be increased notability, and we can let down the demand for wavelength based on xgm in soa and enhance the flexibility of wavelength conversion
我們應用二階超高斯光脈沖與高斯信號脈沖同時注入soa和應用soa與非線性光學環鏡（ nolm ）相結合的方案來對信號脈沖進行壓縮整形，模擬顯示，在調節系統合適參數的情況下，波長位於soa增益區的二階超高斯控制光脈沖在具有較高的峰值功率和適當時延下輸入soa時，最後可以得到放大的高質量超簡訊號光脈沖；在基於soa的交叉增益調制（ xgm ）全光波長轉換中，採用級聯的soa能有效地使反轉光脈沖的頻率啁啾得到有效降低，波長向下轉換的距離和反轉光的峰值能量都得到明顯提高，降低了利用交叉增益調制（ xgm ）波長轉換中對波長精度的要求，從而提高了波長轉換的靈和性。 -
Effect of initial chirp on soliton - effect picosecond pulse compression in optical fibers
初始啁啾對皮秒脈沖孤子效應壓縮的影響 -
Effects of initial chirp and fiber loss on soliton - effect picosecond pulse compression in optical fibers
初始啁啾和光纖損耗對皮秒脈沖孤子效應壓縮的影響 -
We derive an analytic expression of the group velocity dispersion ( gvd ) induced chirp and the self - phase modulation ( spm ) induced chirp in the normal dispersionregion of non - kerr - like optical fibers with saturable nonlinarity. the evolution of chirp is simulated by numerical methods. the studied results show that the more powerful saturable effects, the smaller is chirp and the gently is chirp. the net chirp is zero in the central region of the pulse
從理論上推導出具有飽和非線性的非克爾光纖正常色散區內，群速度色散效應導致的啁啾和自相位調制效應導致的啁啾解析表達式.利用數值解法模擬了非克爾光纖正常色散區啁啾演變過程.研究結果表明：當非克爾光纖的飽和非線性增強時，凈啁啾不斷減小，而且，越來越平緩，脈沖中心附近區域凈啁啾接近零 -
Especially, linbo _ 3 optical modulators, using m - z waveguides and traveling - wave electrodes, are essential for high - speed and long - haul optical fiber transmission systems since the wavelength chirp is very small and the effect of the fiber dispersion is minimized
採用行波電極的m - z型外調制器調制速率高，波長的啁啾噪聲理論上為零，幾乎不受光纖色散的限制，已成為高速長距離光纖傳輸系統必不可少的器件。 -
Especially, linbo3 optical modulators, using m - z waveguides and traveling - wave electrodes, are essential for high - speed and long - haul optical fiber transmission systems since the wavelength chirp is very small and the effect of the fiber dispersion is minimized
採用行波電極的m - z型外調制器調制速率高，波長的啁啾噪聲理論上為零，幾乎不受光纖色散的限制，已成為高速長距離光纖傳輸系統必不可少的器件。 -
Effects of loss, third - order dispersion and five - order nonlinearity on chirp gaussian pulses propagation in optical fiber
高階非線性效應對啁啾高斯光脈沖傳輸的影響 -
In this paper, the evolution equations of the parameters of the optical soliton pulses were derived by means of variational method, in order to investigate the influence of the fifth - order nonlinear effect on the transmission properties of optical soliton in the coupling fiber, and the effects of the fifth - order nonlinearity were discussed on amplitude, frequency band width, chirp, frequency, center position and phase
摘要運用變分法導出五階非線性作用下孤子的參數演化方程組，研究五階非線性耦合光纖中孤子的傳輸特性，討論五階非線性效應對孤子的振幅，頻寬，啁啾，頻率，中心位置及相位的影響。 -
The results also show unequal amplitude method can reduce the interaction between femtosecond soliton in the presence of optical source chirp in a certain degree
研究結果還表明，不等幅傳輸法在一定程度上可有效地抑制源啁啾飛秒孤子間的相互作用。 -
The influence of optical source chirp on femtosecond soliton interaction is studied numerically, and the unequal amplitude method can reduce the interaction. in addition high - order coupled equations governing the evolution of two orthogonal polarization components of the same wave are derived by using multi - dimension derivation expansion method of singular perturbation theory and the dispersion relation. furthermore, a class of optical solitary wave solutions, such as the bright - bright, dark - dark, bright - dark, and combined solitary waves are found under certain parametric conditions
數值研究了源啁啾飛秒孤子間相互作用，提出了抑制該作用的可能方案；用奇異攝動多重尺度導數展開法和色散關系推導了耦合高階非線性薛定諤方程（ chnlse ） ，並用行波變換法得到了一系列孤波解析解，分析了它們在光纖中傳輸的必要條件，也討論了它們的穩定性，為實現飛秒光脈沖在光纖中的無畸變傳輸作理論上的探索。 -
Finally, we introduce the influence of optical source chirp on the interaction of femtosecond bright solitons and investigate the influence of optical source chirp on the interaction of femtosecond dark solitons. the results show that optical source chirp can increase the interaction between femtosecond bright solitons and affect the femtosecond dark solitons seriously
最後，我們介紹了源啁啾對飛秒亮孤子相互作用的影響，同時也考察了源啁啾對飛秒暗孤子相互作用的影響，結果表明，源啁啾會增大飛秒亮孤子間的相互作用，而對于飛秒暗孤子，其影響則相當劇烈。 -
The main results are as follows : 1 ) the influence of optical source chirp on femtosecond soliton interaction is studied numerically. results show that femtosecond soliton interaction with chirp from optical source is more serious than that without optical source chirp. the former can cause larger error code rate in soliton communication systems
其主要結果如下： 1 ）對源啁啾飛秒孤子間的相互作用進行了數值研究，結果表明源啁啾飛秒孤子間的相互作用比源啁啾皮秒孤子間更加嚴重，會在通信系統中造成更大的誤碼率。 -
Influence of the chirp on interaction between optical solitons in twin - core coupling fibers
雙芯耦合光纖中啁啾對光孤子相互作用的影響 -
Based on the coupled mode theory, the reflect spectrum of ofbg is derived. the influenced of grating length, coupling coefficient and chirp coefficient to the maxium reflectivity and reflection bandwidth of ofbg are discussed in details. we find that under weak couple conditions ( the couple coefficient k < 1 ), the reflect spectrum of an ofbg approximately has a characteristic of sa2 ( x ) shape, which matched to the power spectrum of an optical communication signal
本文在利用耦合模理論對均勻及線性啁啾變跡光纖光柵（ ofbg ： opticalfiberbragggrating ）的反射譜進行分析的基礎上，發現弱耦合條件下（耦合系數1 ） ，均勻ofbg的反射譜具有類似與sa ~ 2 （ x ）函數的分佈特性，從而創新提出利用ofbg對光纖通信系統中光放大器的ase噪聲進行匹配光濾波的設想。
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