An all-fibre polarising beam splitter and spectral filter

Abstract

Monomode fibre couplers are key components in many sensor and communication applications, with uses ranging from general-purpose 3dB optical-power splitters to wavelength multiplexers. More specialised couplers for polarisation control can also be fabricated using birefringent fibres. Thus polarisation-maintaining couplers have been fabricated and couplers which transmit only one plane of polarisation have been fabrication from polarising fibre