Adhesive composition for polarisation-maintaining optical fibre

The purpose of the present invention is to provide an adhesive composition for a polarisation-maintaining optical fibre exhibiting a high extinction ratio. This adhesive composition for a polarisation-maintaining optical fibre contains: a compound (A) having an aromatic ring and a reactive silicon-containing group; a glycidyl compound (B); and a compound (C) having a silsesquioxane ladder structure.