Photodiode module and method of making same

Details Photodiode module and method of making same Photodiode module and method of making same

G - Physics

02

B

G02B 6/42 (2006.01)

Patent

CA 2227804

This invention provides an analog PD module useful for a large number of channels and a digital PD module useful for a large power signal input because of its reduced distortion. The PD chip is fixed at a spot deviating by Ltan.alpha. from the lens center in the direction of a projection of a vector TS from the highest edge (T) to the lowest edge (S), where L is the distance between the lens center and the PD. The fiber should deviate in the contrary direction. The orientation enables a beam emanating from the fiber end to pass the center of the lens and reach the PD by spreading on a direct line.

Module PD (photodiodes) analogique utile pour un grand nombre de canaux et module PD numérique utile pour un signal d'entrée de grande puissance en raison de sa distorsion réduite. La puce PD est fixée en un point déviant de Ltan.alpha. par rapport au centre de la lentille dans la direction de projection d'un vecteur TS allant du bord le plus haut (T) au bord le plus bas (S), L étant la distance entre le centre de la lentille et la photodiode. La fibre devrait dévier dans la direction opposée. L'orientation permet à un faisceau émanant de l'extrémité de la fibre de traverser le centre de la lentille pour atteindre la photodiode par étalement sur une ligne directe.

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