Integrated InAs/InP quantum-dot coherence comb lasers (conference presentation)

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Proceedings titleSmart Photonic and Optoelectronic Integrated Circuits XIX
Series titleProceedings of SPIE; no. 10107
ConferenceSPIE OPTO, Jan. 28 - Feb. 2 2017, San Francisco, CA, USA
AbstractCurrent communication networks needs to keep up with the exponential growth of today’s internet traffic, and telecommunications industry is looking for radically new integrated photonics components for new generation optical networks. We at National Research Council (NRC) Canada have successfully developed nanostructure InAs/InP quantum dot (QD) coherence comb lasers (CCLs) around 1.55 m. Unlike uniform semiconductor layers in most telecommunication lasers, in these QD CCLs light is emitted and amplified by millions of semiconductor QDs less than 60 nm in diameter. Each QD acts like an isolated light source acting independently of its neighbours, and each QD emits light at its own unique wavelength. The end result is a QD CCL is more stable and has ultra-low timing jitter. But most importantly, a single QD CCL can simultaneously produce 50 or more separate laser beams at distinct wavelengths over the telecommunications C-band. Utilizing those unique properties we have put considerable effort well to design, grow and fabricate InAs/InP QD gain materials. After our integrated packaging and using electrical feedback-loop control systems, we have successfully demonstrated ultra-low intensity and phase noise, frequency-stabilized integrated QD CCLs with the repetition rates from 10 GHz to 100 GHz and the total output power up to 60 mW at room temperature. We have investigated their relative intensity noises, phase noises, RF beating signals and other performance of both filtered individual channel and the whole CCLs. Those highly phase-coherence comb lasers are the promising candidates for flexible bandwidth terabit coherent optical networks and signal processing applications.
Publication date
PublisherSociety of Photo-optical Instrumentation Engineers
AffiliationInformation and Communication Technologies; National Research Council Canada
Peer reviewedYes
NPARC number23002222
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Record identifieradfff2d2-50e7-472f-a53c-9c2251d17349
Record created2017-09-06
Record modified2017-09-13
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