Recent developments in all-optical networking and wavelength division multiplexing technologies allow for the support of optical multicasting, a missing feature towards the optical Internet. In this paper we propose a protocol to construct source-rooted WDM multicast trees. The protocol works under dense mode multicast routing IP protocols and supports network nodes with different degrees of li...

We explore an optical network architecture which employs dense wavelength division multiplexing (WDM) technology and passive waveguide grating routers (WGR’s) to establish a virtual topology based on lightpath communication. We examine the motivation and the technical challenges involved in this approach, propose and examine the characteristics of a network design algorithm, and provide some il...

This paper has presented the different data transmission limitations in radio over fiber communication systems such as total losses and fiber dispersion. These limitations can be solved by Soliton transmission technique. Signal to noise ratio, bit error rate, and optical signal to noise ratio can be investigated. The transmission bit rate per channel can be analyzed with using both space divisi...

medium-size national network is optimised using the various techniques, and the results presented in terms of the total number of DWDM systems required and the amount of wavelength-hops (giving an indication toward the number of optical transponders required). Traffic is taken as a mix between unprotected and 1+1 SNCP optical path protected demands. Traffic growth is applied over the 5 year pla...

We examine the correlations between the parameters of ultranarrow off-centred filtering and pulse width on the performance of a wavelength paired Nx40Gbit/s DWDM transmission, consisting of carrier suppressed return-to-zero signal with 0.64 bit/s/Hz (without polarizationdivision multiplexing) spectral efficiency.

An easy and efficient evolution method from a time-division multiplexing passive optical networks (TDM-PONs) to next-generation PONs is proposed and demonstrated. A single-type wavelength band combiner/splitter (WC) enables a simple and efficient evolution of TDM-PON maintaining the current PON infrastructure and wavelength plan. The feasibility of the proposed evolution architecture is shown b...

Heterogeneous III-V-on-silicon photonic integration has proved to be an attractive and volume manufacturable solution that marries the merits of III-V compounds silicon technology for various integrated circuit (PIC) applications. The current main-stream Ethernet trends larger bandwidth are pushing higher modulation baudrate or employing advanced format datacom However, neither is likely able s...

In this paper first we try to analysis the behavior ofthe SOAs in the optical networks and then have proposed anumerical simple model to simulate the behavior of thesemiconductor optical amplifiers. After that by employing thismodel as inline amplifier for a DWDM optical system, we havesimulated the transmission of 10 channels with bit rate 10 Gb/sup to distance 3970 km with RZ-DPSK modulation ...

The quantum key distribution (QKD) network is a promising solution for secure communications. In this paper, we proposed polarization-independent phase-modulated polarization encoding module, and it can be combined with dense wavelength division multiplexer (DWDM) to achieve multi-user QKD. We experimentally test the module repetition rate of 62.5 MHz, its average bit error (QBER) as low 0.4%. ...

In the fiber optic communication network for example,- FTTH, EPON, NBN, OTN and so on, most important components are length between transmitter receiver point. So, to make, cheap meaningful through optical it must be required calculate how what amount of signal is transmitted with given fiber. Finally, said that have several limitations like extension ratio. necessary investigate its affect on ...