Direct phase modulation of a DFB laser for udWDM-PON

The response of a DFB was equalized with a simple RC network for modulating directly its phase and producing a BPSK signal. The system was tested with a heterodyne coherent detector at 1.25 Gb/s and 2.5 Gb/s showing a sensitivity penalty of around 1dB when compared with external phase modulation. Th...

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Bibliographic Details
Published inInternational Conference on Transparent Optical Networks (Print) pp. 1 - 4
Main Authors Cano, Ivan N., Lerin, Adolfo, Polo, Victor, Prat, Josep
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.07.2014
Subjects
Bit error rate
DFB
direct phase modulation
heterodyne
Optical fibers
Optical mixing
Optical network units
Passive optical networks
Phase modulation
PON
PSK
udWDM
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ISSN2162-7339
DOI10.1109/ICTON.2014.6876281

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Summary:The response of a DFB was equalized with a simple RC network for modulating directly its phase and producing a BPSK signal. The system was tested with a heterodyne coherent detector at 1.25 Gb/s and 2.5 Gb/s showing a sensitivity penalty of around 1dB when compared with external phase modulation. The results indicate that the technique could be considered as a reliable low-cost ONU transmitter solution in udWDM-PONs.
ISSN:2162-7339
DOI:10.1109/ICTON.2014.6876281