It turned out not to be an academic “journal” article at all but rather a feature in the US news-stand magazine Science Fiction Age:

Jeffrey Henning
“Alien Tongues”
Science Fiction Age, Vol. 3 No. 4 (July 1995), pp. 60-67.

What it is
• Eight-page, photograph-illustrated survey of invented languages that turn up in written SF (and a few in film and television).
• The piece opens with Kilgore Trout/Philip José Farmer’s Venus on the Half-Shell, goes on to Carl Sagan’s Contact, then ranges over Delany’s Babel-17, Farmer’s “Sorgo language”, the Uplift books, CJ Cherryh’s atevi, Trek’s Klingon, etc.
• Henning (a long-time conlanger and later founder of LangMaker.com) also explains how one can create a language of one’s own, giving a short sample language to illustrate the process.

Why you probably missed it
• Science Fiction Age was a glossy bimonthly on news-stands from late 1992 to 2000; its feature articles were never collected in a separate book.
• The appearance date—mid-1995—is just outside the 1992-94 window you remembered.

How to get it today

1. Many larger public- or university-library periodical rooms still have the magazine on microfilm or in bound volumes; ask for Science Fiction Age, July 1995 issue.
2. The article was later posted (with permission) on Henning’s old LangMaker site and can still be recovered through the Internet Archive (search for “langmaker alien tongues”).
3. Second-hand copies of the July 1995 issue regularly turn up on e-Bay and ABEbooks.

So the piece you are thinking of is Jeffrey Henning’s “Alien Tongues” in Science Fiction Age, July 1995.