Photonic Solutions Enewsletter

RSoft System Tools

New Features in the RSoft System Tools Version 2016.06

We are pleased to announce the availability of the RSoft™ System Tools version 2016.06.

This release contains a number of enhancements, new models, and new application notes for OptSim, OptSim Circuit, and ModeSYS.


Updated n-PAM digital signal processing (DSP) library functions, including a more accurate analytical BER calculation, improved automatic threshold calculation, and support for nonlinear level spacing for systems using Mach-Zehnder modulators


  • Blockmode circulator compound component
  • New application notes:
    • PAM4 transmission system using external Mach-Zehnder modulator and the n-PAM OptSim DSP Library functions at the transmitter and at the receiver
    • Estimating penalties from jitter at the transmitter and receiver in fiber-optic data-center links
    • Measurement of total jitter from the BER bathtub curves in high-speed serial I/O links
    • Analyzing intermodulation distortions in intensity modulation, direct detection (IM DD) analog radio-over-fiber links

OptSim Circuit

  • Interface with PhoeniX Software’s OptoDesigner using the PDAFlow API

  • New application notes:
    • Modeling coupled-resonator optical waveguide (CROW) devices
    • MATLAB cosimulation case study: modeling a notch filter photonic integrated circuit
    • Study of interplay between crosstalk and multipath interference (MPI) effects in multi-lane, bidirectional optical interconnects
    • Coherent transmitter PIC for binary phase-shift keying (BPSK) using a silicon photonic ring modulator


  • New application notes:
    • Modeling optical and electrical crosstalk and ground pickup penalties in high-speed, fiber-optic serial communication systems
    • Large-Core Step-Index (LC-SI) fiber model user-specified launch
    • PAM4 transmission in multimode LC-SI fiber-based systems

Please refer to the RSoft System Tools 2016.06 Release Notes, available on our Customer Support Portal, for more details about these and other updates included in the release.

Software and License File Download Instructions

Customers in the U.S., Canada, and Other Direct-Sales Locations 
Software and license key files for RSoft product customers in the U.S., Canada and other direct-sales locations are available on the Synopsys SolvNet website. You will need the following to install the latest RSoft products:

  • RSoft product software: You can download the RSoft products at
    If you do not already have a SolvNet account, information on how to sign up for one can be found on our website.
  • License key file: For the RSoft System Tools 2016.06 release, you will need 2016.06 license key files. You can download license key files from the SmartKeys page on SolvNet at
  • SCL installer: SCL is automatically included with the Windows RSoft installers. You will only need to separately download SCL for Linux installations. You will need SCL version 11.7 or higher of Synopsys Common Licensing from the Electronic Software Transfer (EST) System on SolvNet. You can download this from

Complete instructions about obtaining your RSoft products software, license key files and the SCL installer are available in the RSoft Installation Guide at

To learn more about navigating SolvNet to obtain RSoft products software and license key files, view our SolvNet overview video.

International Customers 
For international customers working with distributors, you will continue to obtain your software and license key files from your local RSoft software distributor. See the Synopsys Optical Solutions Group Global Contacts page for contact information. If your country is not listed on the Distributors page referenced above, please contact us at for instructions.