Recently low power circuits have become a top priority in modern VLSI design. This paper presents post layout simulations of a new improved 2:1 multiplexer design. The proposed design demonstrates its superiority against existing 2:1 multiplexer design in terms of power–delay product (PDP), temperature sustainability, noise immunity and frequency. All the post-layout simulations have been perfo...

Abstract Numerical simulation of directional coupler that is based on the finite element method was conducted using COMSOL Multiphysics software. The distributions electric field and power flow light propagates in two cores were analyzed. results showed dependencies coupling length maximum transfer between separation wavelength, characteristic a subwavelength can be used for photonic integrated...

We consider a statistical multiplexer which is modeled as a discrete-time single-server queueing system. Messages consisting of a variable number of fixed-length packets arrive to the multiplexer at the rate of one packet per slot (“train arrivals”), which results in what we call a primary correlation in the packet arrival process. The distribution of the message lengths (in terms of packets) i...

This study is about the design and analysis of a reversible logic based multiplexer, that is realized using carbon nano tube transistor. Reversible logic realization of the digital circuits offers numerous advantages over conventional circuit design. Power analysis was performed using HSPICE simulation software and the results are obtained for the 2×1 and 4×1 multiplexer transient behavior. The...

We present an integrated 2:1 multiplexer and a companion 1:2 demultiplexer in CMOS. Both integrated circuits (ICs) operate up to a bit rate of 40 Gb/s. The 2:1 multiplexer features two in-phase data inputs which are achieved by a master–slave flip-flop and a master–slave–master flip-flop. Current-mode logic is used because of the higher speed compared to static CMOS and the robustness against c...

A high performance monolithic 4:1 analog multiplexer implemented in an 8 GHz dielectrically isolated complementary bipolar process was designed and simulated. It is useful in many general purpose high-speed applications such as driving an 150 Q cable or an analog to digital (A/D) converter. This switched transconductance amplifier 4:1 video multiplexer has a current mode decoder, a voltage feed...

Mode division multiplexed optical transmission enabled by all-fiber mode multiplexer is investigated. The proposed all-fiber mode multiplexer is composed of consecutive mode selective couplers. It multiplexes or demultiplexes LP01, LP11, LP21, and LP02 modes simultaneously. We demonstrate successful transmission of three spatial modes with 120 Gb/s PDM-QPSK signals over 15 km of four mode fiber...

We propose a mode multiplexer based on volume holograms to realize a simple and efficient mode-division-multiplexed transmission system that supports a large number of modes. Selective multiexcitation of three spatial modes into a conventional multimode fiber is experimentally demonstrated. This device could potentially multiplex 10 or more modes. Future perspectives of the mode multiplexer for...

We demonstrate a 1×4 coarse wavelength division-multiplexing (CWDM) planar concave grating multiplexer/demultiplexer and its application in re-configurable optical add/drop multiplexer (ROADM) system in silicon-on-insulator substrate. The wavelengths of the demonstrated concave grating multiplexer align well with the ITU-T standard. We demonstrate a prototype of ROADM comprising two such concav...