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Joint release of PICWave version 5.5 and Harold 5.0

We are pleased to announce the joint release of PICWave version 5.5 and Harold version 5.0.

PICWave now features an advanced link with our heterostructure model Harold. With this release, even large PICWave simulations consisting of dozens of components are still guaranteed to be consistent with the results of a detailed drift-diffusion/Schroedinger model of the epitaxial structure, taking into account carrier capture/escape/transport effects, band structure effects, free carrier absorption, gain variations etc., all while maintaining PICWave’s famous simulation speed. With this release PICWave greatly advances its world-leading position in the simulation of optoelectronic devices.

Harold now allows almost all of the detailed Harold simulation results to be effortlessly incorporated into large photonic circuits. This version also contains substantial improvements to Harold's material system.

FIMMWAVE/FIMMPROP version 6.4 is released

We are pleased to announce the release of FIMMWAVE/FIMMPROP version 6.4. This version brings a number of very useful improvements. The FDM mode solver’s new non-uniform grid is fully supported by FIMMPROP even when the non-uniform mesh is moving around. The non-uniform FDM now supports automatic mesh refinement, allowing you to increase the resolution where it is most needed automatically. These changes have been seen to increase the simulation speed of some devices by >10x. The ABCs introduced in 6.3 now also work in 3D, meaning you often will not need PMLs for radiating devices. FIMMWAVE can now export and import beam files to and from ray tracing tools FRED and Zemax.

FIMMWAVE/FIMMPROP version 6.3 is released

We are pleased to announce the release of FIMMWAVE/FIMMPROP version 6.3. In this new version the speed and accuracy of the FDM Solver is increased dramatically, particularly if you have a high index contrast waveguide with small features. The accuracy of the FDM Fibre Solver was also significantly improved. We have also introduced new ABCs (absorbing boundary conditions) which complement PMLs for 1D+Z simulations, making it easier to model leaky or radiating structures.  

OmniSim and CrystalWave version 5.6 is released

We are pleased to announce the release of the version 5.6.0 of OmniSim and CrystalWave. This version provides further improvements to our innovative FETD engine. A “void” feature allows you to blank out areas where no light is propagating. This can speed up certain simulations e.g. large ring resonators, by 10x or more. It can also now do Kerr-type non-linearity. CrystalWave Band Structure Analyser now plots the light line. Also various bug fixes and performance improvements.  

EPIPPROP version 2.0 is released

EPIPPROP version 2.0 is here and with it comes our new Arrayed Waveguide Grating module. EPIPPROP has undergone a major boost to its functionality with the addition of AWG modelling to its unique Echelle and Planar Concave grating tool. In addition, changes and improvements to the underlying propagation algorithm have made most simulation almost 40% faster too!

With the inclusion of the AWG we now have a one stop solution to almost all you DWDM/WDM needs!

OmniSim and CrystalWave version 5.5 is released

We are pleased to announce the release of the version 5.5.1 of OmniSim and CrystalWave. This version introduces oblique incidence Bloch boundary conditions for the FETD engine, allowing you to model periodic structures in 2D and 3D with an oblique illumination.

In addition, OmniSim and CrystalWave are now available with a sophisticated RCWA Engine (Rigorous Coupled-Wave Analysis). This is ideal for modelling the scattering from a periodic structure (gratings, metamaterials or diffractive optical elements).

The FDTD Cluster module for Linux clusters now supports 64-bit cluster nodes, allowing you to use very large amounts of memory on each node of the cluster.

PICWave version 5.4 is released

We are pleased to announce the release of version 5.4 of PICWave. This new version brings several key improvements and new additions: it features a much-improved gain fitting tool, engine optimisations to speed up simulation of gain/EA sections, a new spectral hole-burning model and support for multiple carrier levels (e.g. to model bulk-QW capture/escape). Furthermore, it comes with an expanded library of examples and a ready-to-use set of typical MQW laser material/gain data files for reference.

EPIPPROP version 1.4 is released

EPIPPROP version 1.4 is here! EPIPPROP is an advanced flexible design environment for Echelle-grating based WDM devices, providing an alternative to AWGs but in a much smaller footprint.

Worried about estimating fabrication issues? EPIPPROP now includes built in methods to model vertical slab waveguide variation and grating facet corner rounding allowing you to estimate losses from your known fabrication tolerances.

Interested in DBR (distributed Bragg grating) grating facets? EPIPPROP now has a built in 1D-DBR-Model and the ability to import a response curve for more complex DBRs.

Want to broaden your channel response with a MMI? The connection with FIMMPROP has been revamped to take advantage of multiple-sections allowing huge efficiency savings in the simulation of multimode interferometer input and output waveguides.

FIMMWAVE/FIMMPROP version 6.2 is released

We are pleased to announce the release of FIMMWAVE version 6.2. This new version brings major improvements to FIMMPROP with our new RCMT (Rigorous Coupled Mode Theory) algorithm. RCMT is a great complement to EME and allows FIMMPROP to model many otherwise problematic gratings efficiently. It is particularly useful for high index contrast long DBR gratings, for which EME is often impractical.

Next training sessions for FIMMWAVE are announced

We will be hosting our next online training sessions for FIMMWAVE and FIMMPROP on October 13th and 14th for America and October 15th and 16th for Asia/Europe; please see here for more details.

Register for our webinar "Introduction to FETD"

We will be hosting a free open-to-all webinar session in which we will introduce our new FETD Engine (Finite Element Time Domain) for OmniSim and CrystalWave. Please see here for registration and details.

OmniSim and CrystalWave 5.1 introduces major improvements to FETD Engine

We are glad to announce the release of version 5.1 of OmniSim and CrystalWave. This update introduces significant improvements and bug fixes to our new FETD engine. The FDTD engine now has a better way of computing the required time-step, substantially increasing the speed of some FDTD simulations. 

Presenting the results of our collaboration with CEA-LETI

CEA-LETI and Photon Design have collaborated to produce fabrication insensitive Echelle grating multiplexors with low insertion loss and high channel isolation in an SOI platform. The designs were produced using our unique design tool EPIPPROP and fabricated by CEA-LETI. Fabricated devices and simulations were in excellent agreement. The devices showed excellent variability over multiple wafer runs, suggesting that Echelle grating are the way to go for wavelength division multiplexing in high index contrast platforms!

You can find the paper here. The results were also presented at the Photonics West 2015 conference.

PICWave Version 5.3 and updated HHI design kit 

This new version of PICWave includes upgrades to the signal editor to allow completely arbitrary optical signals (complex optical amplitude vs. time) to be defined/imported from file (e.g. Matlab-generated), and improved modelling of saturable absorbers with a wide-band gain vs. carrier density model.

To coincide with this, an updated version of the HHI design kit has been released which now includes the various active building blocks available on the HHI platform, such as the SOA, DBR and DFB lasers, current injection phase modulator and tuneable grating.

New FETD (Finite Element Time Domain) Engine for OmniSim and CrystalWave version 5.0

Version 5.0 of OmniSim and CrystalWave is out. This is the World’s first optical simulator integrating both FDTD and FETD engines, allowing you to get the best of both worlds – FDTD for quick approximate simulations, and FETD when accuracy is needed, or even just to check how the FDTD is doing. Switching between the two is just a button press away, providing unparalleled power and convenience. 

The new 2D/3D FETD Engine is designed to address some of the specific shortcomings of FDTD, in particular for plasmonic devices for which FDTD is very slow. The FETD engine delivers major steps forward in terms of capability, speed and efficiency: from 10x to 100x faster for plasmonics!

This new engine is now included with the FDTD engine at no extra cost. 

Version 6.1 of FIMMWAVE / FIMMPROP released

Version 6.1 of FIMMWAVE / FIMMPROP is released, featuring substantial improvements to our core algorithms:

  • The FEM Solver now offers automatic mesh refinement, offering a typical speed increase of 10x for a given accuracy.

  • The accuracy of the FDM Solver has also been improved when dealing with small features, allowing a coarser grid to achieve the same accuracy as in previous versions in a much shorter time.

  • Modelling bends in FIMMPROP is now easier than before, with much improved performance of the Bend Section when using the FDM Solver and improved support for bend modes in FIMMPROP.

Joint release of Harold Version 4.8 and PICWave Version 5.2

Harold's QCSE modulator module, Harold EAM, can now export component models of simulated electro-absorption modulator (EAM) devices to PICWave, enabling them to be simulated accurately and efficiently in the time-domain as part of integrated circuit designs. Thanks to upgrades to PICWave's Wide-Band Gain Fitter, these EAM time-domain models can faithfully reproduce the high-order wavelength dependence of an EAM's absorption and phase index, and their dependence on reverse bias voltage.  

Our paper on Echelle grating modelling is available on the IEEE website

Check out our paper on Echelle grating design & optimisation using EPIPPROP in the IEEE Photonics Journal. This paper builds up on our experience of Echelle grating modelling and describes a new single-point stigmatic design for Echelle gratings. It also offers a discussion on the Echelle grating design process and introduces a series of rules to improve the performance of any grating.

The paper is available and open access.

Visit us at Photonics West 2017, San Francisco, USA

Photon Design will be attending Photonics West, 31 January - 2 February, the Moscone Center (booth number: 2500), San Francisco, California, USA. Please come and talk to us - we would love to meet you, whether you are existing customers or just interested in what we are doing!