A terahertz optical asymmetric demultiplexer (TOAD)

Abstract

We present a new device capable of demultiplexing Tb/s pulse trains. It requires less than one picojoule of switching energy and can be integrated on a chip. The device consists of an optical nonlinear element asymmetrically placed in a short fiber loop. Its switching time is determined by the off-center position of the nonlinear element within the loop, and therefore it can use the strong, slow optical nonlinearities found in semiconductors, which all other fast demultiplexers seek to avoid. We demonstrate the switch's operation at 50 Gb/s using 600 fJ control pulses

An optical synchronous up counter based on electro-optic effect of lithium niobate based Mach–Zehnder interferometers

“…To deal with the high requirement for data traffic, optics has till date settled its effectiveness in various arithmetic and logic operations (Li et al 1999;Sokoloff et al 1993;Wang et al 2002;Shen and Wu 2008;Vikram and Caulfield 2005) due to its key features of large bandwidth (Caulfield 1990), EMI immunity, massive parallel interconnectivity (Caulfield 1990), low power consumption (Caulfield and Shamir 1989;Caulfield and Collins 1989) and high speed (Caulfield and Shamir 1990;Caulfield 1990;Goodman et al 1984). These advantages can help us to accomplish our dream goal of constructing an ultra-fast computer that can surpass the fastest possible computer.…”

Implementation of 2-bit multiplier based on electro-optic effect in Mach–Zehnder interferometers

“…Optical multiplication has the promising applications in optical computing and communication systems. Numerous arithmetic and logic operations have been suggested in the field of optical computing (Li et al 1999;Sokoloff et al 1993;Wang et al 2002;Shen and Wu 2008;Vikram and Caulfield 2005). Design of all-optical multiplication technique with non-linear medium has been demonstrated (Mukhopadhyay et al 2001).…”

All-optical multicasting NOT and NOR logic gates using gain modulation in an FP-LD

“…Many researches for the AOLGs have been intensively conducted [1,2,3]. Various functions such as optical packet detection, optical regeneration, time demultiplexing and so on, are implemented by the AOLGs [4,5]. For the realization of AOLGs, interferrometric arrangements have been widely used and they offer speed advantages and Boolean logic capabilities.…”