This paper presents an automatic optical equalizer based on a pair of in-house developed high efficiency, acousto-optic variable\r\noptical attenuators (AO-VOAs). The system is polarization insensitive and presents a wide bandwidth compatible with coarse\r\nwavelength division multiplexing (CWDM) requirements: 340 nm. The system operation is automatic and bidirectional and\r\nequalization is obtained in one single iteration of algorithm loop.
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