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Design of DPSK Modulator and Direct Detection Receiver for DWDM Based Optical Communication System


Affiliations
1 Department of Electronics and Communication Engineering, Gautam Buddha University, India
     

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In this paper a 16-bit differential phase shift keying (DPSK) modulator is designed for 32 dense wavelength division multiplexing (DWDM) channels. The DWDM channels are designed with 0.8nm separation in wavelength and operated at 4dBm input power. In the DWDM system, these 32 multiplexed signals propagate through a fiber length of 100 km followed by an erbium-doped fiber amplifier (EDFA) inline. The channel is equipped with pre-amplifier and a dispersion compensating fiber for better performance. Also, a threshold detector is designed for both in-phase and quadrature components to detect the input amplitude and provide a quantized output amplitude level. The result shows that, a 16-bit DPSK optical signal is demodulated successfully using direct detection receiver.

Keywords

Optical System, DWDM, DPSK, EDFA.
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  • Design of DPSK Modulator and Direct Detection Receiver for DWDM Based Optical Communication System

Abstract Views: 243  |  PDF Views: 1

Authors

Gurjit Kaur
Department of Electronics and Communication Engineering, Gautam Buddha University, India
Rajesh Yadav
Department of Electronics and Communication Engineering, Gautam Buddha University, India
Mubashir Ul Zaman
Department of Electronics and Communication Engineering, Gautam Buddha University, India

Abstract


In this paper a 16-bit differential phase shift keying (DPSK) modulator is designed for 32 dense wavelength division multiplexing (DWDM) channels. The DWDM channels are designed with 0.8nm separation in wavelength and operated at 4dBm input power. In the DWDM system, these 32 multiplexed signals propagate through a fiber length of 100 km followed by an erbium-doped fiber amplifier (EDFA) inline. The channel is equipped with pre-amplifier and a dispersion compensating fiber for better performance. Also, a threshold detector is designed for both in-phase and quadrature components to detect the input amplitude and provide a quantized output amplitude level. The result shows that, a 16-bit DPSK optical signal is demodulated successfully using direct detection receiver.

Keywords


Optical System, DWDM, DPSK, EDFA.