High speed data transmission using directly modulated microdisk lasers based on InGaAs/GaAs quantum well-dots

Zubov, F. I.; Maximov, M. V.; Kryzhanovskaya, N. V.; Moiseev, E. I.; Muretova, M. E.; Можаров, А. М.; Kaluzhnyy, Nikolay; Mintairov, S. A.; Kulagina, M. M.; Chorchos, Łukasz; Ledentsov, N. N.; Zhukov, A. E.

doi:10.1364/ol.44.005442

Cited by 30 publications

(13 citation statements)

References 14 publications

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“…Experiments on large signal modulation were performed using a 2 7 -1 pseudo random binary sequence; the microdisk emission was coupled to a lensed fiber and analyzed with a large bandwidth optical sampling module and a digital serial analyzer. Error-free data transmission was realized with a maximum speed of 10 Gb/s 66 . This correlates with the doubled values of −3 dB small-signal modulation bandwidth; f 3dB in the 6…7 GHz range was measured in QWD-on-GaAs microdisk lasers 67 .…”

Section: High-speed Performancementioning

confidence: 99%

Quantum-dot microlasers based on whispering gallery mode resonators

et al. 2021

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The subject of this paper is microlasers with the emission spectra determined by the whispering gallery modes. Owing to the total internal reflection of light on the sidewalls, a high Q-factor is achieved until the diameter is comparable to the wavelength. The light emission predominantly occurs in the plane of the structure, which facilitates the microlaser integration with other elements. We focus on microdisk lasers with various types of the In(Ga)As quantum dots (QDs). Deep localization of charge carriers in spatially separated regions suppresses the lateral diffusion and makes it possible to overcome the undesirable effect of non-radiative recombination in deep mesas. Thus, using conventional epitaxial structures and relatively simple post-growth processing methods, it is possible to realize small microlasers capable of operating without temperature stabilization at elevated temperatures. The low sensitivity of QDs to epitaxial and manufacturing defects allows fabricating microlasers using III–V heterostructures grown on silicon.

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Section: High-speed Performancementioning

confidence: 99%

Quantum-dot microlasers based on whispering gallery mode resonators

et al. 2021

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“…Note that only 2.5% (32 µW at 25 mA) of the entire MD output power was fed into the fiber. Certain arrangements were undertaken to overcome the effects due to the photodetector noise and to measure the true dynamic performance of the MD lasers [89]. To obtain the eye diagrams, ten 2 7 -1 pseudo-random bit sequences (PRBSs) were transmitted through the fiber.…”

Section: Dynamic Characteristics and Data Transmissionmentioning

confidence: 99%

Light Emitting Devices Based on Quantum Well-Dots

Maximov¹,

Nadtochiy²,

Mintairov

et al. 2020

Applied Sciences

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We review epitaxial formation, basic properties, and device applications of a novel type of nanostructures of mixed (0D/2D) dimensionality that we refer to as quantum well-dots (QWDs). QWDs are formed by metalorganic vapor phase epitaxial deposition of 4–16 monolayers of InxGa1−xAs of moderate indium composition (0.3 < x < 0.5) on GaAs substrates and represent dense arrays of carrier localizing indium-rich regions inside In-depleted residual quantum wells. QWDs are intermediate in properties between 2D quantum wells and 0D quantum dots and show some advantages of both of those. In particular, they offer high optical gain/absorption coefficients as well as reduced carrier diffusion in the plane of the active region. Edge-emitting QWD lasers demonstrate low internal loss of 0.7 cm−1 and high internal quantum efficiency of 87%. as well as a reasonably high level of continuous wave (CW) power at room temperature. Due to the high optical gain and suppressed non-radiative recombination at processed sidewalls, QWDs are especially advantageous for microlasers. Thirty-one μm in diameter microdisk lasers show a high record for this type of devices output power of 18 mW. The CW lasing is observed up to 110 °C. A maximum 3-dB modulation bandwidth of 6.7 GHz is measured in the 23 μm in diameter microdisks operating uncooled without a heatsink. The open eye diagram is observed up to 12.5 Gbit/s, and error-free 10 Gbit/s data transmission at 30 °C without using an external optical amplifier, and temperature stabilization is demonstrated.

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“…В последнее время большой интерес привлекли микродисковые/микрокольцевые лазеры, которые рассматриваются как альтернатива вертикально-излучающим лазерам для систем оптической связи на короткие расстояния [1,2]. Достоинством подобных микролазеров является простота конструкции и возможность их интеграции, монолитной или гибридной, с подложками кремния [3,4].…”

Section: Introductionunclassified