Lens arrangement for enhancing the coupling of light shifted...

Details Lens arrangement for enhancing the coupling of light shifted... Lens arrangement for enhancing the coupling of light shifted...

G - Physics

02

B

G02B 27/30 (2006.01) G02B 6/32 (2006.01) G02B 6/34 (2006.01)

Patent

CA 2314272

An optical device that includes a filter element which affects a beam incident thereon by shifting it is provided with a lens, wherein a distance between the lens end face and the filter is different than the distance between the lens end face and the input waveguide. By ensuring an appropriate difference in distance, optimum coupling is achieved even in view of the beam shift from the filter.

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