Beyond 350 GHz: Single-channel 112 Gbps photonic wireless transmission at 560 GHz using soliton microcombs
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866912659618660352 |
|---|---|
| author | Tokizane, Yu Kishikawa, Hiroki Kikuhara, Takumi Talara, Miezel Makimoto, Yoshihiro Okamura, Kodai Yamaji Yasuhiro Nishimoto, Kenji Hase, Eiji Morohashi, Isao Kanno, Atsushi Hisatake, Shintaro Kuse, Naoya Nagatsuma, Tadao Yasui, Takeshi |
| author_facet | Tokizane, Yu Kishikawa, Hiroki Kikuhara, Takumi Talara, Miezel Makimoto, Yoshihiro Okamura, Kodai Yamaji Yasuhiro Nishimoto, Kenji Hase, Eiji Morohashi, Isao Kanno, Atsushi Hisatake, Shintaro Kuse, Naoya Nagatsuma, Tadao Yasui, Takeshi |
| contents | Sixth-generation (6G) back-haul links will require terahertz (THz) carriers above 350 GHz to escape the congested 300 GHz band and support >100 Gbps data rates. Photonic THz transmitters have so far remained below 350 GHz because high-frequency photomixing suffers from phase noise and power limits. Here we demonstrate single-channel wireless transmission at 560 GHz using a fibre-packaged silicon-nitride soliton microcomb as a compact, low-phase-noise optical reference. A high numerical aperture, UV-bonded fibre interface sustains soliton operation for more than 24 hours with 1 W pump power. We phase-lock two distributed-feedback lasers (DFBs) to adjacent comb lines and photomix them in a high-power uni-travelling-carrier photodiode, generating a 560 GHz carrier that bears in-phase and quadrature modulation. We achieve hard-decision forward-error-correction-qualified quadrature phase-shift keying and 16-quadrature amplitude modulation (16QAM) transmissions at 42 and 28 GBaud, respectively, attaining a record 112 Gbps data rate at 560 GHz. Relative to free-running DFBs, microcomb-locked photomixing cuts carrier linewidth and improves 16QAM error-vector magnitude. The results establish soliton microcombs as compact and scalable frequency references for >100 Gbps sub-THz links and chart a path toward compact 6 G back-haul radios. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_17069 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Beyond 350 GHz: Single-channel 112 Gbps photonic wireless transmission at 560 GHz using soliton microcombs Tokizane, Yu Kishikawa, Hiroki Kikuhara, Takumi Talara, Miezel Makimoto, Yoshihiro Okamura, Kodai Yamaji Yasuhiro Nishimoto, Kenji Hase, Eiji Morohashi, Isao Kanno, Atsushi Hisatake, Shintaro Kuse, Naoya Nagatsuma, Tadao Yasui, Takeshi Optics Sixth-generation (6G) back-haul links will require terahertz (THz) carriers above 350 GHz to escape the congested 300 GHz band and support >100 Gbps data rates. Photonic THz transmitters have so far remained below 350 GHz because high-frequency photomixing suffers from phase noise and power limits. Here we demonstrate single-channel wireless transmission at 560 GHz using a fibre-packaged silicon-nitride soliton microcomb as a compact, low-phase-noise optical reference. A high numerical aperture, UV-bonded fibre interface sustains soliton operation for more than 24 hours with 1 W pump power. We phase-lock two distributed-feedback lasers (DFBs) to adjacent comb lines and photomix them in a high-power uni-travelling-carrier photodiode, generating a 560 GHz carrier that bears in-phase and quadrature modulation. We achieve hard-decision forward-error-correction-qualified quadrature phase-shift keying and 16-quadrature amplitude modulation (16QAM) transmissions at 42 and 28 GBaud, respectively, attaining a record 112 Gbps data rate at 560 GHz. Relative to free-running DFBs, microcomb-locked photomixing cuts carrier linewidth and improves 16QAM error-vector magnitude. The results establish soliton microcombs as compact and scalable frequency references for >100 Gbps sub-THz links and chart a path toward compact 6 G back-haul radios. |
| title | Beyond 350 GHz: Single-channel 112 Gbps photonic wireless transmission at 560 GHz using soliton microcombs |
| topic | Optics |
| url | https://arxiv.org/abs/2510.17069 |