Patent ID: 6608723
Filing Date: 2003-08-19
Classification: G02B,G02F

Abstract:
A device for combining optical beams comprising:a first beam angle turner which includes a first birefringent wedge with a first optic axis oriented in a first direction and a second birefringent wedge with a second optic axis oriented in a second direction different from the first direction; a second beam angle turner which includes a third birefringent wedge with a third optic axis oriented in a third direction, a fourth birefringent wedge with a fourth optic axis oriented in a fourth direction different from the third direction, and a Faraday rotator disposed between the third and fourth wedges; and a wavelength division multiplexer (WDM) that is disposed between the first and second beam angle turners and that transmits light of a first wavelength and that reflects light of a second wavelength, said WDM having a first surface facing the second wedge opposite the first wedge and a second surface facing the fourth wedge opposite the Faraday rotator.