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Demonstration of error-free 25Gb/s duobinary transmission using a colourless reflective integrated modulator
Caroline P Lai1, Alan Naughton, Peter Ossieur
1Tyndall National Institute, University College Cork, Lee Maltings, Cork, Ireland. caroline.lai@tyndall.ie
Optics Express
|February 8, 2013
Summary
Researchers developed a novel photonic integrated circuit for high-speed metro networks. This device achieves error-free 25.3Gb/s transmission, supporting future 100Gb/s Ethernet demands.
Area of Science:
- Photonics
- Optical Communications
- Integrated Circuits
Background:
- Next-generation metro transport networks require high-speed, low-cost photonic technologies.
- Dense wavelength-division multiplexing (DWDM) is crucial for increasing network capacity.
Purpose of the Study:
- To develop arrayed photonic integrated circuits (PICs) for 100Gb/s Ethernet.
- To leverage colourless reflective modulators for improved performance and cost-efficiency.
Main Methods:
- Demonstration of a single-channel, hybrid reflective electroabsorption modulator (EAM)-based device.
- Testing error-free duobinary transmission over standard single-mode fibre.
- Characterization of modulator colourless operation across the ITU C-band.
Main Results:
- Achieved error-free 25.3Gb/s duobinary transmission with bit-error rates < 1 × 10(-12) over 35km of fibre.
- Confirmed colourless operation of the modulator across the ITU C-band.
- Observed a low variation (1.2dB) in optical signal-to-noise ratio (OSNR) over the C-band.
Conclusions:
- The developed hybrid reflective EAM-based PIC is a promising technology for low-cost, high-speed metro transport networks.
- The device's colourless operation and performance metrics support its suitability for next-generation DWDM systems.
- This technology can enable future 100Gb/s Ethernet deployments in metro networks.
