WDM transmitter

Details WDM transmitter WDM transmitter

2006-01-31

2006-01-31

Phan, Hanh (Department: 2638)

Optical communications

Multiplex

Wavelength division or frequency division

C398S182000, C398S183000, C398S192000, C398S195000, C398S196000, C398S197000, C398S200000, C398S022000, C398S023000, C398S045000, C398S079000, C398S049000, C398S157000, C359S341430, C359S337000, C359S345000, C372S006000, C372S070000, C372S040000, C385S024000, C385S037000, C385S001000, C385S004000

Reexamination Certificate

active

06993258

ABSTRACT:
A WDM transmitter comprising an array of M pump lasers multiplexed by an M×N multiplexer, in the form of a coupler, and used to feed an array of N optically pumped fiber lasers emitting at wavelengths λ1, λ2, . . . λN. The parameter M determines the number of pump lasers as well as the number of inputs of the pump-multiplexing coupler and can be smaller or equal to parameter N that determines the number of optically pumped lasers. The fiber laser outputs are passed through N isolators before entering N modulators were the signals are monolithically modulated. The outputs of the modulators are passed through an array of N tunable attenuators. Finally all the individual channel outputs are recombined into a single output in a combiner. The output will typically lead to an optical network. The proposed architecture may also be used for optical amplifiers, especially fiber-based optical amplifiers.

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