large-signal current gain 中文意思是什麼
large-signal current gain
解釋
大訊號電流增益-
For micro - cavity semiconductor laser, station model is proposed in this paper and its steady - state and instantaneous characteristics when the coupling efficiency of spontaneous emission into a lasing mode is equal to 1 are analysised. for current noise, sp noise, noise, p noise, as well as current modulation, sp modulation, modulation and p modulation, using small - signal approximation, we derive the laser ' s corresponding transfer functions. and we calculate their signal - to - noise ratio ( snr ) gain in various parameters through frequency domain analysis in the premiss of large input snr
本文對于微腔半導體激光器,提出站模型,能夠較直觀簡潔地分析微腔半導體激光器的穩態和瞬態特性,利用此模型對具有重要實用價值的= 1的微腔半導體激光器進行了討論;對于電流i噪聲、自發發射壽命_ ( sp )噪聲、自發發射因子噪聲、光子壽命_ p噪聲,以及電流調制、 _ ( sp )調制、調制、 _ p調制,在小信號近似下,得到了相應的激光器的傳遞函數;在大信噪比的前提下,對激光器進行了頻域分析,分別計算了它們在不同參數下的信噪比增益,分析了其抗噪聲性能。 -
In order to measure the characteristics of such semiconductor optical amplifier, we adopted a set of measurement system. this measurement system can be used to measure the characteristics of all kinds of active or inactive optical passive components. such device presents good polarization insensitivity ( < 0. 9db ), wide 3db bandwidth ( > 33nm ) at 0 - 200ma and different input signal light wavelength and power, the maximum fiber - to - fiber gain of 10db, lossless operation current of 50 - 75ma for different input signal light wavelength and power, large extinction ratio ( > 50db ) and lower noise figure ( nf ) ( < 8db )
與張瑞英博士一起,首次利用該種有源區結構制備出偏振不靈敏半導體光放大器,並在0 - 200ma注入電流范圍內獲得33nm的3db帶寬,在不同信號波長,不同信號功率0 - 200ma的注入電流范圍內,偏振相關損耗均《 0 . 9db ,在耦合差損為7db / facet的條件下,最大fiber - to - fiher增益達10db ,無損操作電流為50 - 70ma ,消光比達50db以上,而噪聲指數則低於8db ,最小可達4 . 6db 。
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