| Presentation | 2023-10-19 Integration of Spot-size Converters into Membrane Lasers on a SiC substrate Suguru Yamaoka, Takuma Aihara, Nikolaos-Panteleimon Diamantopoulos, Hidetaka Nishi, Takuro Fujii, Yoshiho Maeda, Hiroki Sugiyama, Tatsurou Hiraki, Koji Takeda, Toru Segawa, Shinji Matsuo, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Membrane lasers on SiC provide the fastest direct modulation, but the SiC’s medium refractive index of 2.6 prevents the use of $SiO_x$-based spot-size converters (SSCs), leading to a high fiber-coupling loss. Here, we solve this by fabricating the SSCs on SiC, where a part of the SiC substrate is removed, embedded with $SiO_2$, and planarized. Meanwhile, the $SiO_2$ layer beneath the laser section is thinned to ~30 nm to keep the heat dissipation high. As a result, we obtain a 2.7-dB fiber-coupling loss, 7.3-dBm fiber-coupled output power, and 57-GHz bandwidth for a device with a 120-$mu$m active length. Furthermore, we achieve fiber-amplifier-free 2-km transmission of 100-GBaud PAM-4 signals. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | High-speed direct modulation / Membrane lasers / Spot-size converters / SiC |
| Paper # | OCS2023-31,OPE2023-86,LQE2023-33 |
| Date of Issue | 2023-10-12 (OCS, OPE, LQE) |
| Conference Information | |
| Committee | OCS / LQE / OPE |
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| Conference Date | 2023/10/19(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Takayuki Kobayashi(NTT) / Kosuke Nishimura(KDDI Research) / Taro Arakawa(Yokohama National Univ.) |
| Vice Chair | / Atsushi Yamaguchi(Kanazawa Inst. of Tech.) |
| Secretary | (NTT) / Atsushi Yamaguchi(Sumitomo Electric Industries) / (Fujitsu) |
| Assistant | / Keita Mochiduki(Yokohama National Univ.) / Takshi Fujisawa(Hokaido Univ.) / Hideyuki Nasu(Furukawa Electric) |
| Paper Information | |
| Registration To | Technical Committee on Optical Communication Systems / Technical Committee on Lasers and Quantum Electronics / Technical Committee on OptoElectronics |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Integration of Spot-size Converters into Membrane Lasers on a SiC substrate |
| Sub Title (in English) | Improved Fiber-coupled Output Power Enabling Fiber-amplifier-free Transmission of 100-GBaud Signals |
| Keyword(1) | High-speed direct modulation |
| Keyword(2) | Membrane lasers |
| Keyword(3) | Spot-size converters |
| Keyword(4) | SiC |
| 1st Author's Name | Suguru Yamaoka |
| 1st Author's Affiliation | NTT Device Technology Labs(NTT) |
| 2nd Author's Name | Takuma Aihara |
| 2nd Author's Affiliation | NTT Device Technology Labs(NTT) |
| 3rd Author's Name | Nikolaos-Panteleimon Diamantopoulos |
| 3rd Author's Affiliation | NTT Device Technology Labs(NTT) |
| 4th Author's Name | Hidetaka Nishi |
| 4th Author's Affiliation | NTT Device Technology Labs(NTT) |
| 5th Author's Name | Takuro Fujii |
| 5th Author's Affiliation | NTT Device Technology Labs(NTT) |
| 6th Author's Name | Yoshiho Maeda |
| 6th Author's Affiliation | NTT Device Technology Labs(NTT) |
| 7th Author's Name | Hiroki Sugiyama |
| 7th Author's Affiliation | NTT Device Technology Labs(NTT) |
| 8th Author's Name | Tatsurou Hiraki |
| 8th Author's Affiliation | NTT Device Technology Labs(NTT) |
| 9th Author's Name | Koji Takeda |
| 9th Author's Affiliation | NTT Device Technology Labs(NTT) |
| 10th Author's Name | Toru Segawa |
| 10th Author's Affiliation | NTT Device Technology Labs(NTT) |
| 11th Author's Name | Shinji Matsuo |
| 11th Author's Affiliation | NTT Device Technology Labs(NTT) |
| Date | 2023-10-19 |
| Paper # | OCS2023-31,OPE2023-86,LQE2023-33 |
| Volume (vol) | vol.123 |
| Number (no) | OCS-220,OPE-221,LQE-222 |
| Page | pp.pp.24-27(OCS), pp.24-27(OPE), pp.24-27(LQE), |
| #Pages | 4 |
| Date of Issue | 2023-10-12 (OCS, OPE, LQE) |