Modeig98 User Manual

Below is the index for the User manual. The links in the index will take you to the given section. The sections are located just below this index. (i.e. you can scroll down to browse through the manual).

1. Introduction / About MODEIG98 - General Description
2. Improvements / Modifications from the Last Version
3. Installation
4. Using MODEIG98
5. Using the Utilities
6. The Design Process
7. Input Files
8. Output Files
9. Examples
10. Discussion on Complex Refractive Indices
11. Error Codes
12. FAQ: Frequently Asked Questions
13. Credits

• Modified Command Line Interface
• File based interface that will provide the ability to use/create other front-end interfaces for modeig98. Currently available are a Windows based front-end as well as UNIX and DOS script/bat files to provide command line functionality
• The integration of the program to convert the *.ly file to an index profile file (*.ip).
• The addition of On-line help information
• Viewing of an example input file
• MODEIG98 Viewer
• MODEIG98 will remember the last used active input and output files
• Addition of on-line command summary
• The integration of the Overlap program (calculates the overlap integral for multiple near field files.)
• The addition of other material systems including:
  • InGaAsP
  • AL2O3
  • AlGaInP
  • AlGaInAs (lattice-matched)
  • AlGaInAs (lattice-mismatched)
  • GaAsP
  • GaInP
  • InGaAs
  • InGaAsP (lattice matched to InP)
  • Si
  • SiO2
• The increase in the number of layers that MODEIG can handle from 40 to 100 layers.
• Input files are no longer case sensitive.
  
  

• Input files can be named *.m98
• Output file extensions modified to the following:
  • Output file: *.ot
  • Layer file: *.ly
  • Database file: *.db
  • Nearfield file: *.nf
  • Farfield file: *.ff
  • Index Profile file: *.ip
  • Overlap Output file: *.ovp
• 2-D input files are no longer supported.
• Invalid/Outdated input flags:
  • The following flags for the CASE statement are no longer valid.
    (YESTR, YESTI, ALPHA0, B, BM, DELTA, S, WC, SR, SPREAD, LLEFT, LRIGHT, XAXLEN, YAXLEN, INTHM, SL, Y, DY, PEROPT, LXYOPT)
  • The following flags for the STRUCT statement are no longer valid.
    (ALPERC**)
  • The following flags for the LAYER statement are no longer valid.
    (ALPERC**)
  • The following flags for the OUTPUT statement are no longer valid.
    (DPRINT, OPRINT, NPRINT, FPRINT, LPRINT)
  • The following flags for the LOOPZ statement are no longer valid.
    (ALPERC1**, ALPERC2**, ALPERC3**, ALPERC4**)
• ** ALPERC (STRUCT & LAYER) input flag replaced with MATSYS, XPERC and YPERC flags. This was done to support multiple material systems.
  
  

• MODEIG98 is a 32-bit program. To run MODEIG98 on a PC, the user will need Windows95, WindowsNT or win32s.

• Verify that you have downloaded the correct file for your operating system. (XX refers to the version number)
  

  Win95,WinNT,win32s	mod98wXX.zip
  UNIX based Alpha	mod98uXX.tar.gz
  Macintosh	mod98mXX.hqx
  Mac PowerPC	mod98pXX.hqx

• Use the uncompression program for your operating system to uncompress the files into the given directory. The suggested directory is 'C:\modeig98'. This is suggested for pc users to better interface the Windows GUI. (NOTE: If at all possible, DO NOT use any directory whose name is longer than 8 characters for the PC!)
  

  Win95,WinNT,win32s	Pkzip 2.0 / Winzip
  UNIX based Alpha	gzip and tar
  Macintosh	stuffit
  Mac PowerPC	stuffit

• Verify that the correct files have been uncompressed into the desired directory. Files that should be included in the distribution are as follows; (if any files are missing, please see the comment page on how to contact the authors.
  

  Win95,WinNT,win32s	UNIX based Alpha	Macintosh	Mac PowerPC
  modeig98.exe m98help.txt m98examp.txt m98about.txt m98auto.bat elf90.eer	modeig98 m98help.txt m98examp.txt m98about.txt m98auto ?????.eer	modeig98 m98help.txt m98examp.txt m98about.txt ?????.eer	modeig98 m98help.txt m98examp.txt m98about.txt ?????.eer

• That is it! The modeig98.exe (for PC) or modeig98 (for UNIX-alpha or Macintosh) is the program - execute it to start.

For more information on running the program, associated files, etc. type 'help' at the modeig98 prompt.

• The MODEIG98 user interface was desigend to mimic a command line entry system. In MODEIG98, the commands either; 1. Modify the active filenames, 2. Operate on the active files or 3. Display information.
  
• The active file names will always be displayed directly above the MODEIG98 prompt.
  
• Commands are not case sensitive, but filenames could be case sensitive depending on the operating system.
  
• Typically, the user should only need to type the first 4 letters of any given command.

• After starting modeig98, select the active input file using the infile command:
  
  [infile=default.m98 outfile=default]
  modeig98> infile myfile.m98
  
  
• The infile and outfiles will be modified to display your active input file:
  
  [infile=myfile.m98 outfile=myfile]
  modeig98>
  
  
• If you want to change the output file prefix, you can use the outfile command:
  
  [infile=myfile.m98 outfile=myfile]
  modeig98> outfile new
  
  
• The outfiles will be modified to display your active output file prefix:
  
  [infile=myfile.m98 outfile=new]
  modeig98>
  
  
• Then to evaluate the input file, use the eval command:
  
  [infile=myfile.m98 outfile=new]
  modeig98> eval