In a conventional optical element module, a filter substrate mounting an air-core coil thereto is mounted in the vicinity of a light emitting element, and the light emitting element and the air-core coil are electrically connected to each other by a bonding wire, etc. Therefore, a problem exists in that it is difficult to set the length of a line path between the light emitting element and the air-core coil to about 1 mm or less, and no preferable high frequency characteristics are obtained. Therefore, an optical element module of this invention has a light emitting element, and a filter portion used in one portion of a bias circuit for supplying a bias electric current from a power source to this light emitting element, wherein this filter portion has a coil portion and a first connecting portion extending from one end of this coil portion, and the first connecting portion directly connects the coil portion and the light emitting element without electrically joining the first connecting portion to any substrate on the way.