Based on the flexibilities of light beam propagation in three dimensions, we propose an improved N-port optical quasi-circulator by using a pair of orthogonal holographic spatial- and polarization- modules. All optical elements are located in parallel planes that are perpendicular to the optical axis. The number of optical elements is decreased, and a higher performance optical quasi-circulator...

We analyze an optical 3-port reflection grating by means of a scattering matrix formalism. Amplitude and phase relations between the 3 ports, i.e. the 3 orders of diffraction are derived. Such a grating can be used as an all-reflective, low-loss coupler to Fabry-Perot cavities. We derive the input output relations of a 3-port grating coupled cavity and find distinct properties not present in 2-...

In an optical time-division multiplexed (OTDM) network with all-optical routers, system performance, that is, the bit-error rate (BER), is limited by a number of additional noise sources due to the router. In this paper, we investigate the noise contribution due to the crosstalk and relative intensity noise (RIN) within the router, and derive an expression for the BER. We also show that the pow...

Traffic grooming continues to be a rich area of research in the context of WDM optical networks. We provide an overview of the optical and electronic grooming techniques available with focus on IP as the client layer. We discuss the various architectural alternatives available : peer, overlay and augmented models. We first provide a survey on the research work in the area of traffic grooming in...

Optical Network-on-Chip (ONoC) is a promising emerging technology, which can solve the bottlenecks faced by electrical on-chip interconnection. However, the existing proposals of ONoC are mostly built on fixed topologies, which are not flexible enough to support various applications. To make full use of the limited resource and provide a more efficient approach for resource allocation, RONoC (R...

The load-balanced switch architecture is a promising way to scale router capacity. We explained in [1] how it can be used to build a 100Tb/s router with no centralized scheduler, no memory operating faster than the line-rate, no packet missequencing, a 100% throughput guarantee for all traffic patterns, and an optical switch fabric that simply spreads traffic evenly among linecards. This switch...

We propose an ultra-broadband full-mesh wavelength router supporting the T- and O-bands using 3 stages of cascaded arrayed waveguide gratings (AWGs). The router architecture is based on a combination of waveband and channel routing by coarse and fine AWGs, respectively. We fabricated several T-band-specific silica-based AWGs and quantum dot semiconductor optical ampliers as part of the router, ...

In this paper a novel hybrid wave-pipelined bit-pattern associative router is presented. A router is an important component in communication network systems. The bitpattern associative router (BPARj allows for flexibility and can accommodate a lavge number of routing algorithms. Wave-pipelining is a high performance approach which implements pipelining in logic without using intermediate regist...

This paper presents the design, implementation and evaluation of a micro-network, or Network-on-Chip (NoC), based on a generic pipeline router architecture. The router is designed to efficiently support traffic generated by multimedia applications on embedded multi-core systems. It employs a simplest routing mechanism and implements the round-robin scheduling strategy to resolve output port con...