Power threshold due to parametric gain in dispersion-mapped communication systems

wind farm impact on generation adequacy in power systems

در سال های اخیر به دلیل افزایش دمای متوسط کره زمین، بشر به دنبال روش های جایگزین برای تامین توان الکتریکی مورد نیاز خود بوده و همچنین در اکثر نقاط جهان سوزاندن سوخت های فسیلی در نیروگاه های حرارتی به عنوان مهم ترین روش تولید توان الکتریکی مطرح بوده است. به دلیل توجه به مسایل زیست محیطی، استفاده از منابع انرژی تجدید پذیر در سال های اخیر شدت یافته است. نیروگاه های بادی به عنوان یک منبع تولید توان...

Ultrahigh-bit-rate soliton communication systems using dispersion-decreasing fibers and parametric amplifiers.

We study analytically and numerically soliton communication links made by use of dispersion-decreasing fibers and parametric amplif iers. We show that bit rates greater than 100 Gbits/s (one channel, one polarization) can be achieved with large amplif ier spacings (as high as 120 km). The Raman effect and soliton interactions are compensated through optical phase conjugation, whereas fiber loss...

experimental investigation of power consumption, mass transfer coefficient and flow regime in gas-liquid dispersion systems

Parametric Study of Fuel Vapor Concentration Distribution Due to Vaporization of Fuel Droplets in Free Atmosphere

The growth of a two-phase cloud of a liquid fuel in a stagnant atmosphere is studied using computational fluid dynamic techniques. In order to predict the danger and hazard of such cloud in open atmosphere it is very important to determine the fuel concentration in the cloud, especially in the far field region from the fuel reservoir. The results show that with omission of droplets break up...

Amplifier similaritons in a dispersion-mapped fiber laser [Invited]

Amplifier similaritons are generated in a dispersion-mapped fiber laser. Output pulse parameters are nearly independent of the net group velocity dispersion (GVD) owing to the strong local nonlinear attraction in the gain fiber, which dictates the pulse evolution. This constitutes a stable mode-locking regime that is capable of generating sub-100-fs pulses over a broad range of anomalous and no...