A new styleguide, template, and style file are provided for OSA Optics Express manuscript submissions in LaTeX. OpEx_style.tex: LaTeX style guide and template opexfig1.eps: Sample .eps figure OpEx_style.pdf: PDF version of style guide OpEx_temp.tex: LaTeX template opex3.sty LaTeX style file; replaces opex2.sty osajnl.bst OSA BibTeX style file (beta version) geometry.sty keyval.sty trig.sty Major changes from previous distribution (opex2.sty) - page layout now controlled with geometry package - graphicx package referenced instead of graphics package - packages times, helvet, and courier referenced for Times, Helvetica, and Courier fonts Contact Jennifer Martin (jmarti@osa.org) with any questions. Scott Dineen, 10/15/2003