In this contribution an innovative, full analog, fiber optic sensors (FOS) interrogator is designed which, being fully compatible with the 4-20 mA standard of Programmable Logic Controller (PLC), enable integration FOS technology in safety framework, such as Detector Safety System (DSS) LHC Experiments. It composed by a analog electrical circuitry, capable to directly transduce signal coming fr...

Due to the lack of optical random access memory, optical fiber delay line (FDL) is currently the only way to implement optical buffering. Feed-forward and feedback are two kinds of FDL structures in optical buffering. Both have advantages and disadvantages. In this paper, we propose a more effective hybrid FDL architecture that combines the merits of both schemes. The core of this switch is the...

In this work, we show future research directions about optical computing systems based on Arrayed Waveguide Grating Routers. We analyze the optical integration at different layers of large-scale architectures. At board-level, we aim to demonstrate significant execution time improvements and energy efficiency of optically interconnected systems running real benchmark applications on a cycle-accu...

The design of demultiplexers based on array waveguides is well known [1-5]. A new design based on the concept of variable waveguide depth was recently reported [6]. Since, the fabrication of channel waveguides on glass, silica or lithium niobate is mostly controlled by the lithography pattern and the subsequent fabrication process, it is difficult to implement the variable depth concept on thes...

We have reduced the minimum bending radius of a silica waveguide from 2 mm to 200 μm by burying low-refractive index material along both sides of the core. The local lateral relative refractive index difference (Δ) was increased to 9.05%. Moreover, we fabricated both an 8-channel, 100-GHz channel-spacing arrayed-waveguide grating (AWG) and an 8-channel, 12.5-GHz channel-spacing AWG using variat...

This paper discusses an optical packet switch (OPS) arch itecture, which utilizes the components like optical reflectors, tunable wavelength converters (TWCs), arrayed waveguide grating (AW G) and pieces of fiber to realize the switching action. This architecture uses routing pattern of AW G, and its symmetric nature, to simplify switch operation significantly. It is also shown that using multi...

A novel Dynamically Reconfigurable Optical Packet Switch (DROPS) that combines both spectral and spatial switching capabilities is proposed and experimentally demonstrated for the first time. Compared with an Arrayed Waveguide Grating Router (AWGR), the added spatial switching capability provided by the microelectromechanical systems (MEMS) enables dynamically reconfigurable routing that is not...

2-µm-wavelength-range silicon-on-insulator (SOI) arrayed waveguide gratings (AWGs) with heterogeneously integrated InP-based type-II quantum well photodetectors are presented. Low insertion loss (2.5-3 dB) and low crosstalk (-30 to -25 dB) AWGs are realized. The InP-based type-II photodetectors are integrated with the AWGs using two different coupling approaches. Adiabatic-taper-based photodete...

We use the soft lithography technique to fabricate a polymeric waveguide Bragg grating filter. Master grating structure is patterned by e-beam lithography. Using an elastomeric stamp and capillary action, uniform grating structures with very thin residual layers are transferred to the UV curable polymer without the use of an imprint machine. The waveguide layer based on BCB optical polymer is f...

For lack of optical random access memory, optical fiber delay line (FDL) is currently the only technology to implement optical buffering. Feed-forward and feedback are two types of FDL structures in optical buffering, both have advantages and disadvantages. In this paper, we present a novel architecture for WDM optical packet switches with an effective hybrid FDL buffering that combines the mer...