Home › Forums › BPM › OptiBPM simulation results seems to be very pixelated › Reply To: OptiBPM simulation results seems to be very pixelated
![Profile Photo](https://optiwave.com/wp-content/uploads/avatars/13853/59baa5f8596d2-bpfull.png)
Hello Narendra,
I found your problem in examining your bpd file. In your design you have the background of your simulation (Set in Simulation Domain / 3D Wafer Properties) to air while your waveguides are 1.5. If you will note in the example design it is in fact set to a cladding value of 1.44 with a core of 1.46. Did you mean to setup a simulation with such a high dielectric contrast? Note that with new designs these settings are defaulted to the previous design.
OptiBPM is a numerical algorithm that is designed for low-index contrast applications that do not have reflections. Modelling a high-index contrast y-branch would prove to be very troublesome using this numerical algorithm. This is something more in line with the OptiFDTD application.
Scott
Categories
- All
-
Knowledge
Contains a detailed Q&A knowledge base. -
General
All non-technical questions. -
System
Optical system design and analysis. -
Instrument
Communicate and control different kinds of instruments. -
SPICE
Opto-electronic circuit design. -
FDTD
Finite-Difference Time-Domain simulation. -
BPM
Beam Propagation Method analysis and design. -
Grating
Fiber optic grating simulation. -
Fiber
Optical fiber design and characterization. -
Exchange
Users can exchange design files.
(Matlab, C++, etc.)