Fiber Optic Services /

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Optical Communication Network System Simulation





OptSim is RSoft’s award-winning software tool for the design and simulation of optical communication systems at the signal propagation level. With state-of-the-art simulation techniques, an easy-to-use graphical user interface and lab-like measurement instruments, OptSim provides unmatched accuracy and usability.

  • Only design tool with multiple engines implementing both the Time Domain Split Step and the Frequency Domain Split Step for the most accurate and efficient simulation of any optical link architecture.
  • MATLAB® interface makes it easy to develop custom user models using the m-file language and/or the Simulink® modelling environment.
  • Interfaces with laboratory test equipment such as Agilent and Luna to merge simulation with experiment.
  • Interfaces with device-level design tools such as BeamPROP, and LaserMOD provide a powerful mixed-level design flow for 0ptoelectronic circuits and systems.
  • Co-simulation with embedded SPICE engine, and interfaces with EDA tools such as Cadence Virtuoso Spectre, and Synopsys HSPICE for a mixed-domain electrical and optical simulation.
  • Interfaces with EDA tools such as Berkeley SPICE, Cadence Virtuoso Spectre, and Synopsys HSPICE for a mixed-domain electrical and optical simulation.
  • Application Programming Interface (API) for programming languages such as C/C++ for the development of custom user models.
  • Best Fit Laser Toolkit™ makes customizing powerful rate-equation laser model parameters to fit desired performance characteristics easy.
  • Extensive library of predefined manufacturer components makes it easy to model commercially available devices.
  • Intuitive and flexible measurement post-processing graphical interface acts like a virtual laboratory instrument.


Applications : DWDM / CWDM systems with optical amplification, e.g. EDFA, Raman, SOA, OPA, Advanced Modulation Formats, e.g. D(Q)PSK, Duobinary, etc. , FTTx / PON, Coherent Optical communication Systems, e.g. PM-QPSK, OFDM, OCDMA / OTDM, CATV Digital/Analog, Optical Interconnects, EDC, FSO, ROF, Soliton, Interferometric Fiber Optic Gyroscope (I-FOG)













ModeSYS supports the design and simulation of multimode fiber optic systems. With a primary focus on data communication applications, ModeSYS allows users to evaluate both temporal and spatial attributes of optical signal propagation. ModeSYS can be used as a standalone tool or combined with OptSim to form a comprehensive single-mode and multimode optical communication system design suite.

  • Multimode fiber model includes Helmholtz equation solver supporting arbitrary index profile and index profile perturbations.
  • Extensive set of measurement tools enables the user to analyze keycharacteristics of multimode optical communication systems such as:
  • Transverse mode profiles · Effective modal bandwidth (EMB)
  • Signal over time · Differential Mode Delay (DMD)
  • Signal spectra · Encircled Flux (EF) · Eye diagrams · Radial power distributions · BER
  • Mode-propagation model supports modal dispersion and Differential Mode Attenuation (DMA).

Applications : Gigabit Ethernet, e.g. 1GbE, 10GbE, 10GBASE- systems, e.g. SX, LX-4 and LRM, Serial / WDM, FTTx / PON, EDC, Optical Interconnects, FSO











OptSIM Circuit

OptSim Circuit is an extension of Synopsys’ award-winning fiber optic systems modeling tool, OptSim. It delivers a single framework, engine and sets of models to study systems ranging from long-haul optical communication systems to sub-micron photonic circuits. This enables you to evaluate system-level performance in OptSim of a photonic integrated circuit (PIC) that is designed in OptSim Circuit. It is an ideal platform to study optical systems and photonic circuits that operate with coupling and feedback of different optical and electrical signal paths.


OptSim Circuit is ideally suited for computer-aided design of PIC applications and bidirectional systems, including but not limited to:

  • Single- and multi-stage bidirectional PICs
  • Integrated transceivers
  • Integrated network subassemblies and switching fabrics
  • FFTx/PON
  • Microwave photonics
  • Optical interconnects
  • Sensing technologies, including interferometric fiber optic gyroscopes