Title :
Quaternary optical ASK-DPSK and receivers with direct detection
Author :
Ohm, Michael ; Speidel, Joachim
Author_Institution :
Inst. of Telecommun., Univ. of Stuttgart, Germany
Abstract :
We present a novel quaternary optical-modulation scheme based on the combination of amplitude and phase modulation. The modulator has a simple structure and can be realized by using standard components. We present two simple receivers, each one using photodiodes for direct detection. The performance of the modulation scheme is investigated.
Keywords :
amplitude shift keying; demodulation; differential phase shift keying; optical modulation; optical receivers; optical signal detection; optical transmitters; photodiodes; amplitude modulation; demodulator structures; direct detection; modulator; phase modulation; photodiodes; quaternary optical ASK-DPSK; quaternary optical-modulation scheme; receivers; standard components; transmitters; Amplitude modulation; Demodulation; Differential quadrature phase shift keying; Optical fibers; Optical filters; Optical modulation; Optical receivers; Optical transmitters; Phase detection; Phase modulation;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2002.805776
