Cao, Victoria;
Pan, Shujie;
Wu, Dingyi;
Zhang, Hongguang;
Tang, Mingchu;
Seeds, Alwyn;
Liu, Huiyun;
... Chen, Siming; + view all
(2024)
A novel bidirectionally operated chirped quantum-dot based semiconductor optical amplifier using a dual ground state spectrum.
APL Photonics
, 9
(4)
, Article 046110. 10.1063/5.0194677.
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Abstract
Bi-directionally operated amplifiers enabling efficient utilization of transmission wavelengths are promising candidates in densely integrated photonic circuits for future cost-effective, power-efficient optical networks. Here, we demonstrate, for the first time, a broadband semiconductor optical amplifier (SOA) based on a novel chirped multilayered quantum dot (QD) structure, which is suitable for bi-directional amplification via the dual ground state (GS) emission spectrum. The fabricated QD SOA has achieved a maximum 3-dB gain bandwidth of 50 nm while retaining on-chip gain above 20 dB at both GS wavelengths. Under an optimum pumping current of 280 mA, the bi-directionally operated QD SOA has shown around 10 dB receiver sensitivity improvement in ultra-high-speed 100 Gbaud non-return-to-zero and 53.125 Gbaud four-level pulse amplitude modulation data transmission systems.
| Type: | Article |
|---|---|
| Title: | A novel bidirectionally operated chirped quantum-dot based semiconductor optical amplifier using a dual ground state spectrum |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1063/5.0194677 |
| Publisher version: | http://dx.doi.org/10.1063/5.0194677 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Science & Technology, Physical Sciences, Optics, Physics, Applied, Physics, EXTERNAL-CAVITY LASERS, POWER, FIBER, DYNAMICS, PAM-4, SOA |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10191709 |
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