Wavelength Division Multiplexing (WDM) has been shown to be one of the most promising ways to exploit the enormous bandwidth of a single mode optical ber. Networks employing WDM are commonly based on optical passive star couplers. The major cost and limitations of such networks lie in the interface (both transmitters and receivers) providing optical-electronic conversion between stations and co...

Wavelength-division multiplexing (WDM) appears to be the solution of choice for providing a faster networking infrastructure that can meet the explosive growth of the Internet. Several different technologies have been developed so far for the transfer of data over WDM, with wavelength routing being the most prominent one. In this paper, we survey two new technologies which are still in their ex...

Polymer optical fiber (POF) is one of the best transmission media for short-distance communications. To increase the transmission capacity of the fiber a wavelength-division-multiplexing (WDM) technique is commonly used. Several POF-WDM systems have been realized using interference filters and plane diffraction gratings as wavelength selective elements. In the present paper, for the first time ...

We demonstrate electrically pumped lasers on silicon that produce pulses at repetition rates up to 40 GHz. The mode locked lasers generate 4 ps pulses with low jitter and extinction ratios above 18 dB, making them suitable for data and telecommunication transmitters and for clock generation and distribution. Results of both passive and hybrid mode locking are discussed. This type of device coul...

In optical networks with huge transmission capability, Wavelength Division Multiplexing (WDM) has been actively studied in the research community. Traffic grooming technology based on divided bandwidth of a wavelength by WDM is very important for the network cost. This paper proposes a traffic grooming algorithm that employs the table for shortest Edge Disjoint Paths (EDPs) with clever selectio...

This contribution concentrates on dynamic routing in WDM (Wavelength Division Multiplexing) networks. It is shown that a strategy based on precalculated alternatives and an adaptive dynamic path search performs very well over a wide load range. Moreover, specific effects for the impact of resource allocation strategies in photonic WDM networks are highlighted, especially the influence of wavele...

The Gain flatness of EDFA (Eridium Dopedd Fiber Amplifier) plays a important role for WDM optical application. The purpose of this paper is to improve the gain uneveness for each channel in order to equalize the amplitude in a Wavelength Division Multiplexing (WDM) system .By using low pass Chebshev filter, tunning numerical aperature, fiber length and pump power we can improve the gain faltnes...

Traffic grooming in optical networks employing wavelength division multiplexing has gained prominence due to the prevailing sub-wavelength capacity requirements of users. One approach to achieving wavelength sharing is through time division multiplexing. Connection requests can have varying number of time slot requirements. Analytical modeling for computing blocking performance of establishing ...

High-speed cellular technologies require low-latency and high-capacity optical networks. The Centralized Radio Access Network (C-RAN) architecture offers a cost-effective solution for mobile network deployment. To maximize flexibility minimize deployment costs of fronthaul networks, we propose hybrid bidirectional C-RAN topology based on Wavelength Division Multiplexing (WDM) passive networks (...

This paper demonstrated a multi-channel Wavelength-Division-Multiplexing (WDM) system using photonic crystal structures. The system consists of a waveguide that realized by a defect row of photonic crystal and high Q-value micro-cavities. Two-Dimension (2-D) Finite-Difference-TimeDomain (FDTD) method is performed for simulation in this paper. The results showed good ability to filter an inciden...