2026-10-14T09:56:22Z https://api.figshare.com/v2/oai

oai:figshare.com:article/32012769 2026-10-01T16:00:21Z category_37476 portal_1023 item_type_12 month_year_10_2026

Unlocking the O-Band Coherent Transmission: high-power, broadband soliton microcomb Dmitrii Stoliarov (14417928) Nikolay G. Pavlov (5784839) Aleksandr Donodin (17911904) Daniel J. Elson (10912462) Vitaly Mikhailov (23728260) Jiawei Luo (763133) Sergey Koptyaev (17260927) Robert Emmerich (19266277) Ruben S. Luis (14386632) Hideaki Furukawa (14386647) Colja Schubert (19266280) Ronald Freund (20731466) Yuta Wakayama (21537791) Takehiro Tsuritani (21782612) David J. DiGiovanni (18770716) John D. Jost (6328673) Maxim Karpov (4180195) Sergei K. Turitsyn (3963623) Physics (arXiv) physics.optics (arXiv) The O-band (1260-1360 nm), located near the minimum chromatic dispersion of standard single-mode fiber, is an important transmission window for short-reach data-center interconnects. Its broader use is limited by the availability of scalable multi-wavelength, high-power and low-noise light sources. Here we demonstrate a high-power O-band soliton microcomb architecture combining an 834 GHz self-injection-locked (SIL) Si3N4 microcomb spanning 1050-1650 nm with a single-stage bismuth-doped phosphosilicate fiber amplifier. The system delivers > 0 dBm per carrier for 21 O-band comb lines over a 100 nm bandwidth, exhibiting low-noise operation and a 5 dB variation in amplifier gain. We validate the amplified source in a 25-km coherent WDM transmission experiment using 32-GBd dual-polarisation 64-QAM. Comb carriers spanning the O-band are characterised under simultaneous WDM loading, yielding an aggregate GMI-estimated throughput of 7.23 Tb/s and a post-FEC throughput of 6.94 Tb/s. This approach establishes a practical route towards broadband, high-power O-band microcomb sources for multi-terabit optical interconnects. 2026-09-29T00:00:00Z Text Preprint 10.48550/arXiv.2604.08767 https://figshare.com/articles/preprint/Unlocking_the_O-Band_high-power_broadband_soliton_microcomb/32012769 CC0