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Drive Innovation with RSoft Photonic Design Tools

Increase productivity and reduce the cost of physical prototyping with RSoft photonic device tools. Keysight offers a comprehensive portfolio of simulators and optimizers for passive and active photonic and optoelectronic devices, including lasers and vertical-cavity surface-emitting lasers (VCSELs). The tools integrate with additional optical and semiconductor design tools to accelerate multi-domain co-simulations. For example, use the interoperability between Keysight optical design tools, specifically CODE V and LightTools  for rigorous modeling of nano-textured optical structures and diffraction analysis.

With RSoft photonic device tools, your team can:

  • Accelerate photonic component design using highly accurate algorithms that support rapid virtual prototyping.
  • Discover new design products by creating “what if” product scenarios.
  • Work in a common CAD environment without having to import your optoelectronic or multiphysics design from one software to the next.
  • Automate parameter scanning and optimization using RSoft MOST.
  • Mix and match RSoft photonic simulators, licensing only the products that are relevant to your work.
  • Improve workflows for sensor design, laser design, and more.

Find the Software That's Right for You

RSoft CAD Environment

The RSoft CAD Environment is the core program of the RSoft photonic device tools. Design waveguide devices, optical circuits, and other photonic devices.

RSoft FullWAVE FDTD

Use the RSoft FullWAVE FDTD simulation tool to study how light propagates in photonic structures, circuits, and nanophotonic devices.

RSoft BeamPROP BPM

Use industry-leading RSoft BeamPROP BPM design software to rapidly and accurately design and simulate integrated and fiber-optic waveguide devices and circuits.

RSoft DiffractMOD RCWA

Use DiffractMOD RCWA design tool for diffractive optical structures, subwavelength periodic structures, photonic bandgap crystals, and more.

RSoft BandSOLVE PWE

Automate and simplify photonic band structure for photonic crystal devices with RSoft BandSOLVE plane wave expansion design tool.

RSoft FemSIM FEM

Use RSoft FemSIM FEM design tool to calculate any number of transverse or cavity modes of an arbitrary structure on a non-uniform mesh.

RSoft GratingMOD CMT

Use RSoft GratingMOD CMT simulation tool to analyze and design complex optical fibers and integrated waveguide circuits for a variety of photonic applications.

RSoft ModePROP EME

Explore RSoft ModePROP EME, an eigenmode expansion (EME) propagation tool that accounts for both forward and backward propagation and radiation modes.

RSoft MetaOptic Designer

Use RSoft MetaOptic Designer to optimize metasurface and metalens design for next-generation compact imaging, sensing, and display applications.

RSoft LaserMOD

Discover RSoft LaserMOD photonic device design tool for simulating optical, electronic, and thermal properties of semiconductor lasers and similar active devices.

RSoft Tapered Laser Utility

Explore RSoft Tapered Laser Utility, an efficient and accurate design tool that analyzes and optimizes tapered semiconductor laser diodes.

RSoft LED Utility

Use the RSoft LED Utility for accurate LED simulation of novel light-emitting diode structures and all materials involved.

RSoft Solar Cell Utility

Use the RSoft Solar Cell Utility to efficiently conduct solar cell optical simulation, streamlining design and analysis.

RSoft Multi-Physics Utility

Use RSoft Multi-Physics Utility to analyze carrier-induced as well as stress-, electro-, and thermo-optic effects, with RSoft passive device simulation tools.

RSoft MOST

Use RSoft MOST or Multi-Variable Optimization and Scanning Tool to automate definition, calculation, and analysis of photonic device optimizations and scans.

RSoft Photonic Device Compiler

Use RSoft Photonic Device Compiler to generate foundry-specific building blocks for PICs as well as augment existing PDKs with custom components.

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Explore Photonic Design Blogs

Featured Resources

White Papers 2026.03.16

Efficient and Accurate BPM Simulation of a Polarization

How a silicon‑based polarization converter‑splitter can be efficiently and accurately simulated using BPM, demonstrating that BPM achieves FDTD‑level accuracy while reducing computation time and memory usage by several orders of magnitude.

2026.03.16

Application Notes 2026.03.02

Designing LIDAR on a Chip

LIDAR on a chip offers a compact, robust, solid‑state alternative to mechanical LIDAR for autonomous systems. Achieving high performance requires optimizing insertion loss, output power, beam steering, and beam quality. Specialized photonic simulation tools accelerate development, reduce risk, and enable scalable, commercially viable integrated LIDAR designs.

2026.03.02

Application Notes 2026.03.16

Reflective Multimode Interference Coupler

A compact reflective MMI coupler with etched TIR mirrors enables shorter, more integrated PIC designs. Because BPM and FDTD each address different modeling challenges, a co‑simulation approach using BeamPROP, FullWAVE, and MOST efficiently handles propagation, facet reflections, and MMI‑length optimization.

2026.03.16

Application Notes 2026.03.17

Dielectric THz Metalens Design

Terahertz (THz) waves lie between microwaves and far‑infrared and offer unique properties useful in astronomy, telecommunications, imaging, and sensing. Designing low‑loss, compact lenses is essential for THz control, and dielectric metalenses provide a promising solution.

2026.03.17

Application Notes 2026.03.16

Studying the Mode Evolution within a Knife-Edge Taper-Based Spot Size Converter

In this application note, we explore the mode profiles evolution at specific cross-sections along a knife-edge taper-based SSC structure. Understanding how the optical mode evolves allows us to optimize various parameters of the SSC, such as taper length, core size, and material properties.

2026.03.16

White Papers 2025.10.20

Choosing the Right Photonic Device Design Software

To narrow the field, it can be helpful to ask these key questions.

2025.10.20

Flyers 2025.10.20

What's New in RSoft Photonic Device Tools

Learn about new features and enhancements in the RSoft Photonic Device Tools 2024.09 release.

2025.10.20

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