Optical beam splitter apparatus with deformable connection between two beam splitters

摘要

An optical beam splitter arrangement comprising two beam splitter mounts (30,40) one of which can be rotated relative to the other by flexing a deformable connection (50). By controlling the angle of rotation it is possible to use the light reflected by one of the beam splitters to monitor the output power of a laser (60) and to use the light reflected by the other beam splitter to monitor the wavelength transmitted by the laser. <IMAGE>