This invention relates to temperature compensated FFPs with improved means for alignment of optical fibers. The invention provides ferrule holders with shaped ferrule passageways, as components of FFP alignment fixtures, in which optical fiber ends can be readily aligned using the ferrule rotary alignment...http://www.google.fr/patents/US5509093?utm_source=gb-gplus-shareBrevet US5509093 - Temperature compensated fiber fabry-perot filters
