This is a free Windows program that can calculate both the reflection/transmission of optical waves through a multilayer coating and parameters for the excitation of surface optical waves propagating along the interface. The program calculates both the thicknesses of the double layers and the thickness of the final truncated layer at given refractive indices of the layers. The dispersion of the refractive indices can be given in the form of the Sellmeier/Drude formulas or in the form of a wavelength-n-k table. For mixed layers, the Maxwell Garnett theory can be used. The program is suitable for studying and visualizing the field distribution inside photonic crystals, dispersion, and other aspects of the designed structures that sustain optical surface modes. I hope that this program should promote scientific development and implementation of practical applications in the area of surface optical waves. [Design of 1D Photonic Crystals Sustaining Optical Surface Modes]

In the 2.0 version of the program, a generalized Effective Index Method (gEIM) has been implemented, enabling calculations not only for one-dimensional (1D) but also for two-dimensional (2D) waveguides, including effective refractive indices and spatial profiles of 2D modes. [Cutoff-inclusive generalized effective index method for waveguide design] Key feature: 2D waveguide calculations are now available in the Step 2 window (see the bottom-right checkbox).

The program is distributed as a self-contained single file, which contains all components of the application, including the .NET libraries and target runtime libraries. The program is isolated from other .NET applications and does not use a locally installed shared runtime. The executable file '1DPC4all.exe' can be run on any 64-bit Windows above Windows 7. The user of the program is NOT required to download and install any versions of .NET.

Figure 1 shows how the program should look^* after running (in Step 1).

Short tutorials for users:

1. 1st Example - Transmission and reflection from a multilayer coating at normal incidence (2:38):
   
2. 2nd Example - structure for Photonic Crystal Surface Modes (3:40):
   
3. 3rd Example - structure for Long-Range Surface Plasmons (3:49):
   
4. 4th Example - visualization of ordinary Surface Plasmons in Kretschmann geometry and visualization of Long-Range Surface Plasmons in a symmetric geometry (4:03):
   
5. How to add new optical materials to the program and in what forms refractive indices can be presented there (3:37):
   
6. How to set initial parameters in the program and how to save the data received in the program (5:07):
   
7. 5th Example - Calculation of reflection from 121,712 layers with new program version 1.1. (6:50):
   
8. 6th Example - Calculation of 2D waveguides with a new program version 2.0. (7:08):