Polymethylmethacrylate　(PMMA)　optical　fibers　with　two　types　of　diameters　were　uniformly　arranged　in　sulfoaluminate　mortar　by　different　methods.　Light　transmitting　sulfoaluminate　cement-based　materials　(LTSCM)　were　prepared.　Optical　and　mechanical　properties　of　LTSCM　were　studied.　The　compressive　strength　decreased　linearly　with　increasing　volume　fraction　of　optical　fiber　in　LTSCM.　Compressive　strength　of　specimen　after　80　degrees　C　water　bath　was　larger　than　that　of　specimen　under　standard　curing　conditions.　According　to　CCD　technology,　brightness　of　optical　fiber　in　different　positions　of　LTSCM　can　be　exhibited　clearly.　Light　transmitting　performance　of　LTSCM　was　tested　by　optical　power　method.　Transmittance　of　specimen　decreased　with　increasing　spacing　between　the　detector　and　specimen.　Optical　power　increased　with　increasing　number　of　fiber　and　with　increasing　diameter　of　fiber.　Transmittance　of　fiber　was　weakened　due　to　water　bath　at　high　temperature.　Voids　existed　between　the　fiber　and　matrix.　(C)　2015　Elsevier　Ltd.　All　rights　reserved.