Direct phase modulation DFBs for cost-effective ONU transmitter in udWDM PONs

Abstract:

A technique for direct phase modulating a low-cost distributed feedback laser is presented for user transmitter in ultra dense wavelength division multiplexing passive optical networks. It consists of a simple RC network, which equalizes the phase response. The method is tested with differential phase-shift keying modulation and heterodyne coherent detection at 1.25 and 2.5 Gb/s showing a penalty <1 dB at BER = 10-3 compared with external phase modulation. © 1989-2012 IEEE.

Año de publicación:

2014

Keywords:

• UDWDM
• Differential phase shift keying
• PONs
• heterodyne detection
• Ultra dense wavelength division multiplexing
• Passive Optical Networks
• direct modulated lasers

Fuente:

scopus