Rabin & Berdo, P.C.
Optical time-division multiplexing transmitter module
 An optical time-division multiplexing transmitter module which includes an optical circulator, an optical coupler which splits in two an optical signal in the form of a pulse beam output from the circulator, first and second double-pass electro-absorption (DPEA) modulators positioned respectively to receive and modulate one and the other of the two split signals, and reflect the modulated signals back through the coupler to the circulator. The coupler multiplexes the reflected signals and directs the multiplexed signals to the circulator which then guides them to exit through a circulator output port. An optical delay circuit is positioned between in the path of one of the split signals so as to delay it relative to the other. 
Oki Electric Industry Co., Ltd.
H H
H04B H04J
inventional inventional
Hiromi
Yamada