Enhanced Tuning Performance of In-Series REC-DFB Laser Array

Dai, Pan; Sun, Zhenxing; Chen, Zhuo; Lu, Jun; Wang, Feng; Tong, Hao; Xiao, Rulei; Chen, Xiangfei

doi:10.1109/lpt.2021.3119710

Cited by 3 publications

(3 citation statements)

References 15 publications

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“…The thermal conductivity of submount and the thermal contact between the submount and the heatsink can both significantly influence the temperature of the laser chip via thermal simulations and heat conduction analysis [20] . To cover the 2.5 nm wavelength spacing of the proposed REC-DFB MLA, the lasing element laser's temperature needs to increase by at least 25 K. We then adjust the currents of the integrated thinfilm heaters on the AlN submount to study the wavelengthtuning effect through thermal simulations.…”

Section: Principle and Designmentioning

confidence: 99%

Wideband tunable REC-DFB laser array using thin-film heaters on the submount

et al. 2023

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A wideband wavelength-tunable 4 × 5 distributed feedback (DFB) semiconductor laser array based on the reconstructionequivalent-chirp (REC) technique using a simple tuning scheme is demonstrated. It consists of 20 DFB lasers with 4 × 5 matrix interleaving distributions, two-level cascaded Y-branch optical combiners, and one active semiconductor optical amplifier (SOA), all in-series integrated on one chip. Unlike the traditional thermal-electric cooler (TEC)-based wavelength-tuning scheme, the tunable 4 × 5 REC-DFB laser array achieves a faster and broader continuous wavelength-tuning range using TaN thin-film heaters integrated on the AlN submount. By changing the injection current of the TaN resistor from 0 to 190 mA, the proposed tunable laser achieves a wavelength-tuning range of ∼2.5 nm per channel and a total tuning of over 50 nm. This study opens up new avenues for realizing cost-effective and wide-tuning-range semiconductor lasers.

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Section: Principle and Designmentioning

confidence: 99%

Wideband tunable REC-DFB laser array using thin-film heaters on the submount

et al. 2023

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“…In 2021, Xiangfei et al [21,22] proposed a tunable series-connected distributed feedback multi-wavelength laser array (DFB-MLA) based on reconstruction equivalent chirp (REC) technology. Its wavelength spacing was 2.4 nm and the SMSR was greater than 40 dB.…”

Section: Main Research Progress and Statusmentioning

confidence: 99%

“…The 60-channel DFB laser array produced by REC technology can control the wavelength error of 83% of the laser within ±0.20 nm and 93.5% of the laser within ±0.30 nm [51], greatly improving the yield. REC technology can not only be used in the manufacturing of parallel DFB laser arrays but also in the manufacturing of series DFB laser arrays [22] and series-parallel combined DFB laser arrays [52].…”

Section: Main Research Progress and Statusmentioning

confidence: 99%

Research Progress of Monolithic Integrated DFB Laser Arrays for Optical Communication

et al. 2022

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Photonic integrated circuits (PICs) play a leading role in modern information and communications technology. Among the core devices in PICs is the distributed feedback (DFB) multi-wavelength semiconductor laser array. Multi-wavelength semiconductor laser arrays can be integrated on a single chip and have the advantages of high stability, good single-mode performance, and narrow line width. The wavelength tuning range has been expanded through the design of the DFB laser array, which is an ideal light source for wavelength-division multiplexing systems. The preparation of DFB laser arrays with a large number of channels, ease of mass production, and accurate emission wavelengths has become an important field of research. The connection methods of lasers in DFB laser arrays are introduced systematically and the current methods of manufacturing multi-wavelength DFB laser arrays covering the perspective of technical principles, technical advantages and disadvantages, main research progress, and research status are summarized.

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High-power tapered two-section distributed feedback laser based on a chirped sampled grating

Shi

et al. 2023

Appl. Opt.

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We propose and theoretically study a two-section high-power distributed feedback (DFB) laser with three equivalent phase shifts (3EPSs). A tapered waveguide with a chirped sampled grating is introduced to amplify the output power and keep a stable single-mode operation. The simulation exhibits the maximum output power and side mode suppression ratio of a 1200 µm length two-section DFB laser as high as 306.5 mW and 40 dB, respectively. Compared with traditional DFB lasers, the proposed laser has a higher output power, which may benefit wavelength division multiplexing transmission systems, gas sensors, and large-scale silicon photonics.

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Enhanced Tuning Performance of In-Series REC-DFB Laser Array

Cited by 3 publications

References 15 publications

Wideband tunable REC-DFB laser array using thin-film heaters on the submount

Wideband tunable REC-DFB laser array using thin-film heaters on the submount

Research Progress of Monolithic Integrated DFB Laser Arrays for Optical Communication

High-power tapered two-section distributed feedback laser based on a chirped sampled grating

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