Widely tunable external cavity lasers based on the 3 µm-thick silicon-on-insulator platform for operation in the C and L bands in the DYNAMOS EU project

Katherine Bryant; Mikko T. Harjanne; Antonin Gallet; Sheherazade Lamkadmi; Hélène Debregéas; Timo Aalto

doi:10.1117/12.3038708

Widely tunable external cavity lasers based on the 3 µm-thick silicon-on-insulator platform for operation in the C and L bands in the DYNAMOS EU project

Katherine Bryant^*, Mikko T. Harjanne, Antonin Gallet, Sheherazade Lamkadmi, Hélène Debregéas, Timo Aalto

^*Corresponding author for this work

BA6203 Silicon photonics

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

Abstract

Broadband, high wall-plug-efficiency, and narrow-linewidth tunable lasers with a small footprint remain a critical unmet need in a range of applications. In particular, ever-increasing demands on speed and throughput in data center networks can be addressed with the novel fast-tunable-laser based network system proposed in the DYNAMOS EU project. The 3 µm-thick silicon-on-insulator (SOI) platform offers the benefits of ultra-low propagation loss, broadband operation, polarization insensitivity, and mature fabrication techniques scalable to high volumes. We demonstrate a wide tuning range of over 60 nm in the C and L bands for external cavity lasers (ECLs) fabricated on 3 µm SOI based on a three-ring resonator tunable reflector using the Vernier effect. We additionally show via simulation results the impact of various tunable reflector parameters on loss and tuning range.

Original language	English
Title of host publication	Silicon Photonics XX
Editors	Graham T. Reed, Jonathan Bradley
Publisher	International Society for Optics and Photonics SPIE
ISBN (Electronic)	9781510684904
DOIs	https://doi.org/10.1117/12.3038708
Publication status	Published - 2025
MoE publication type	A4 Article in a conference publication
Event	Silicon Photonics XX 2025 - San Francisco, United States Duration: 28 Jan 2025 → 30 Jan 2025

Publication series

Series	Proceedings of SPIE
Volume	13371
ISSN	0277-786X

Conference

Conference	Silicon Photonics XX 2025
Country/Territory	United States
City	San Francisco
Period	28/01/25 → 30/01/25

Funding

This work has been mostly carried out in PICAP and DYNAMOS projects, which were partly funded by Business Finland (decision 44065/31/2020) and EU (grant 101070342), respectively. The work is part of the Research Council of Finland Flagship Programme, Photonics Research and Innovation (PREIN), decision number 368651, and it has been supported by the Research Council of Finland, FinnLight infrastructure funding, decision 359148.

Keywords

3 µm SOI waveguide
external cavity laser
Mach-Zehnder interferometer
photonic integrated circuit
reflective semiconductor optical amplifiers
tunable laser
tunable reflector
Vernier effect

Access to Document

10.1117/12.3038708

Cite this

Bryant, K., Harjanne, M. T., Gallet, A., Lamkadmi, S., Debregéas, H., & Aalto, T. (2025). Widely tunable external cavity lasers based on the 3 µm-thick silicon-on-insulator platform for operation in the C and L bands in the DYNAMOS EU project. In G. T. Reed, & J. Bradley (Eds.), Silicon Photonics XX Article 1337105 International Society for Optics and Photonics SPIE. https://doi.org/10.1117/12.3038708

Bryant, Katherine ; Harjanne, Mikko T. ; Gallet, Antonin et al. / Widely tunable external cavity lasers based on the 3 µm-thick silicon-on-insulator platform for operation in the C and L bands in the DYNAMOS EU project. Silicon Photonics XX. editor / Graham T. Reed ; Jonathan Bradley. International Society for Optics and Photonics SPIE, 2025. (Proceedings of SPIE, Vol. 13371).

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title = "Widely tunable external cavity lasers based on the 3 µm-thick silicon-on-insulator platform for operation in the C and L bands in the DYNAMOS EU project",

abstract = "Broadband, high wall-plug-efficiency, and narrow-linewidth tunable lasers with a small footprint remain a critical unmet need in a range of applications. In particular, ever-increasing demands on speed and throughput in data center networks can be addressed with the novel fast-tunable-laser based network system proposed in the DYNAMOS EU project. The 3 µm-thick silicon-on-insulator (SOI) platform offers the benefits of ultra-low propagation loss, broadband operation, polarization insensitivity, and mature fabrication techniques scalable to high volumes. We demonstrate a wide tuning range of over 60 nm in the C and L bands for external cavity lasers (ECLs) fabricated on 3 µm SOI based on a three-ring resonator tunable reflector using the Vernier effect. We additionally show via simulation results the impact of various tunable reflector parameters on loss and tuning range.",

keywords = "3 µm SOI waveguide, external cavity laser, Mach-Zehnder interferometer, photonic integrated circuit, reflective semiconductor optical amplifiers, tunable laser, tunable reflector, Vernier effect",

author = "Katherine Bryant and Harjanne, \{Mikko T.\} and Antonin Gallet and Sheherazade Lamkadmi and H{\'e}l{\`e}ne Debreg{\'e}as and Timo Aalto",

year = "2025",

doi = "10.1117/12.3038708",

language = "English",

series = "Proceedings of SPIE",

publisher = "International Society for Optics and Photonics SPIE",

editor = "Reed, \{Graham T.\} and Jonathan Bradley",

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Bryant, K , Harjanne, MT, Gallet, A, Lamkadmi, S, Debregéas, H & Aalto, T 2025, Widely tunable external cavity lasers based on the 3 µm-thick silicon-on-insulator platform for operation in the C and L bands in the DYNAMOS EU project. in GT Reed & J Bradley (eds), Silicon Photonics XX., 1337105, International Society for Optics and Photonics SPIE, Proceedings of SPIE, vol. 13371, Silicon Photonics XX 2025, San Francisco, United States, 28/01/25. https://doi.org/10.1117/12.3038708

Widely tunable external cavity lasers based on the 3 µm-thick silicon-on-insulator platform for operation in the C and L bands in the DYNAMOS EU project. / Bryant, Katherine ; Harjanne, Mikko T.; Gallet, Antonin et al.
Silicon Photonics XX. ed. / Graham T. Reed; Jonathan Bradley. International Society for Optics and Photonics SPIE, 2025. 1337105 (Proceedings of SPIE, Vol. 13371).

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

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AU - Gallet, Antonin

AU - Lamkadmi, Sheherazade

AU - Debregéas, Hélène

AU - Aalto, Timo

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ER -

Bryant K , Harjanne MT, Gallet A, Lamkadmi S, Debregéas H, Aalto T. Widely tunable external cavity lasers based on the 3 µm-thick silicon-on-insulator platform for operation in the C and L bands in the DYNAMOS EU project. In Reed GT, Bradley J, editors, Silicon Photonics XX. International Society for Optics and Photonics SPIE. 2025. 1337105. (Proceedings of SPIE, Vol. 13371). doi: 10.1117/12.3038708

Widely tunable external cavity lasers based on the 3 µm-thick silicon-on-insulator platform for operation in the C and L bands in the DYNAMOS EU project

Abstract

Publication series

Conference

Funding

Keywords

Access to Document

Other files and links

Fingerprint

DYNAMOS: DYNAmic and Reconfigurable data centre networks with Modular Optical Subsystems

Cite this

Widely tunable external cavity lasers based on the 3 µm-thick silicon-on-insulator platform for operation in the C and L bands in the DYNAMOS EU project

Abstract

Publication series

Conference

Funding

Keywords

Access to Document

Other files and links

Fingerprint

Projects

DYNAMOS: DYNAmic and Reconfigurable data centre networks with Modular Optical Subsystems

Cite this