Optical receiver

Details Optical receiver Optical receiver

H - Electricity

04

B

H04B 10/158 (2006.01) H01L 31/10 (2006.01) H01L 31/107 (2006.01) H04B 10/04 (2006.01) H04B 10/06 (2006.01) H04B 10/14 (2006.01) H04B 10/26 (2006.01) H04B 10/28 (2006.01)

Patent

CA 2245226

This optical receiver comprises an avalanche photodiode (APD) 1, pre-amplifier 2 and a current shunting means disposed between the APD and its bias supply. When the optical input power exceeds the predetermined level, the current shunting become effective. Then, the photocurrent generated in the APD is fed to the current shunting circuit and the APD is enough biased to hold the stable avalanche condition.

L'invention est un récepteur optique comportant une photodiode à avalanche 1, un préamplificateur 2 et un dispositif de dérivation du courant monté entre cette photodiode et son alimentation. Quand la puissance d'entrée optique est supérieure à un niveau prédéterminé, le dispositif de dérivation du courant entre en fonction. € ce moment, le courant photoélectrique produit par la photodiode est transmis au circuit de dérivation et la photodiode est polarisée suffisamment pour stabiliser la situation d'avalanche.

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