Characterization of a low-cost, monolithically integrated, tunable 10G transmitter for wavelength agile PONs
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Accepted version
Date
2018-12
Authors
Carey, Daniel
Ramaswamy, Prasanna
Talli, Giuseppe
Antony, Cleitus
Roycroft, Brendan
Corbett, Brian M.
Townsend, Paul D.
Journal Title
Journal ISSN
Volume Title
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Published Version
Abstract
Dynamically reconfigurable passive optical networks (PONs) using time-division multiplexing and dense wavelength division multiplexing will require low-cost, high-performance customer premises equipment to be economically viable. In particular, substantial cost savings can be achieved through the use of efficient re-growth free, foundry-compatible fabrication techniques. Using this strategy, this paper presents the first detailed characterization of a monolithically integrated transmitter comprised of a discretely tunable slotted Fabry–Pérot ridge waveguide laser, an absorptive modulator and a semiconductor optical amplifier (SOA) produced using a standard off-the-shelf AlInGaAs/InP multiple quantum well epitaxial structure. This first generation device demonstrates a discrete single-mode tuning range of approximately 12 nm between 1551nm and 1563 nm with a side-mode suppression ratio ≥30 dB. Moreover, the integrated modulator section is shown to support transmission at 10 Gb/s using non-return to zero on-off keying with an extinction ratio in excess of 8 dB. Furthermore, using a time-resolved chirp measurement technique to examine dynamic deviations in the set carrier frequency, the modulator section exhibits a chirp contribution of <6 GHz using test patterns with high and low frequency content. In addition, the generation of optical bursts through the application of a gating function to the SOA section was found to shift the unmodulated carrier of a typical lasing mode by ≤8 GHz for gating periods comparable with a typical PON burst durations of 125 μs which are faster than the thermal response time of the transmitter material.
Description
Keywords
Optical transmitters , Modulation , Semiconductor optical amplifiers , Tuning , Vertical cavity surface emitting lasers , Fabrication , Waveguide lasers , Optical communications , Dense wavelength division multiplexing , Time division multiplexing , Passive optical networks , Tunable semiconductor lasers , Monolithic integration
Citation
Carey, D., Ramaswamy, P., Talli, G., Antony, C., Roycroft, B., Corbett, B. and Townsend, P. D. (2018) 'Characterization of a Low-Cost, Monolithically Integrated, Tunable 10G Transmitter for Wavelength Agile PONs', IEEE Journal of Quantum Electronics, 54(6), pp. 1-12. doi: 10.1109/JQE.2018.2874628
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