New type of wavelength division multiplexed signal transmission by use of crosstalk elimination circuit

This paper describes a system to transmit a pair of optical wavelength-division-multiplexed (WDM) signals, without expensive optical couplers, from a sender to a receiver through an optical fiber, eliminating crosstalk at 570 nm and 800 nm by the use of electronic circuit. The direct and pulse frequency modulation systems using crosstalk elimination circuit are also described in this paper