There have been increasing interests in programmable optical add-drop multiplexers (OADM) and wavelength-selective switches in wavelength-division-multiplexed (WDM) networks. Conventional OADM has one input and one output channels, in addition to an add and a drop channels [l]. It is also called 1x1 OADM. Dynamic OADM with more than one output ports offers greater flexibility and functionality ...

One approach for accommodating IP traffic on the wavelength division multiplexing (WDM) network is to construct a logical topology by establishing a set of lightpaths between nodes. The lightpath carries IP traffic and does not require any electronic packets processing at intermediate nodes, which reduces the load of packet processing at those nodes. However, if IP and WDM networks have their o...

Metro WDM networks play an important role in the emerging Internet hierarchy; they interconnect the backbone WDM networks and the local access networks. The current circuit-switched SONET/SDH-over-WDM-ring metro networks are expected to become a serious bottleneck — the so-called metro gap — as they are faced with an increasing amount of bursty packet data traffic and quickly increasing bandwid...

In this paper, we present a reliable WDM (Wavelength-Division Multiplexing) multicast protocol in optical burst-switched (OBS) networks. Since the burst dropping (loss) probability may be potentially high in a heavily loaded OBS backbone network, reliable multicast protocols that have developed for IP networks at the transport (or application) layer may incur heavy overheads such as a large num...

در این پژوهش سعی می‌­شود مدلی برای شبیه‌­سازی چرخه عمر صنعت برق با استفاده از شبیه‌سازی عامل­بنیان ارائه شود، مدل، 5 عامل استخراج شد و شبیه­‌سازی به کمک نرم‌افزار Anylogic صورت پذیرفت. بهینه‌­سازی مدل چهار سناریو نظر خبرگان شد. سناریوی نخست، جذابیت نیروگاه گازی سیکل ترکیبی کاهش یافت بر دو دیگر افزوده نتیجه افزایش تولید آبی است که توجه کمبود منابع کشور به‌صرفه نیست. دوم ورود یک فناوری جدید میزان...

Ultrafast hierarchical OTDM/WDM network is proposed for the future core-network. We review its enabling technologies: Cand L-wavelength-band generation, OTDM-WDM mutual multiplexing format conversions, and ultrafast OTDM wavelengthband conversions.

We presented review on current advancement in WDM-PON technologies to standarized economical system implementation, and also discuss cost-effective solutions and potential areas of application. Key-Words: WDM-PON, OFDM, OCDMA, RSOA.

The number density of small dark matter (DM) halos hosting faint high-redshift galaxies is sensitive to the DM free-streaming properties. However, constraining these properties complicated by degeneracies with uncertain baryonic physics governing star formation. In this work, we use a flexible astrophysical model and Bayesian inference framework analyse ultra-violet (UV) luminosity functions (L...

Wavelength division multiplexing (WDM) switching has been emerging as the dominant technology in optical networks. In this paper, we study the switching performance of WDM optical packet switch (OPS) equipped with tunable wavelength converter sharing dedicated to each output fiber line under self-similar variable packet length traffic. In this study, we model WDM OPS employing tunable wavelengt...

We develop algorithms for the design of optical packet-switched networks. These algorithms are aimed at upgrading an existing ber-based, network infrastructure, such as the NSFNET backbone, by using Wavelength Division Multiplexing (WDM) technology. The network architecture employs wavelength-routing optical switches which enable the establishment of all-optical, WDM channels, called lightpaths...