On-chip integrated light sources with MoS2/WSe2 moiré superlattices at telecom wavelengths
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arXiv
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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866915227953528832 |
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| author | Huang, Xingyu Fang, Hanlin Kadkhodazadeh, Shima Nielsen, Monia Runge Lin, Qiaoling Sun, Zhipei Wubs, Martijn Xiao, Sanshui |
| author_facet | Huang, Xingyu Fang, Hanlin Kadkhodazadeh, Shima Nielsen, Monia Runge Lin, Qiaoling Sun, Zhipei Wubs, Martijn Xiao, Sanshui |
| contents | On-chip integrated light sources are essential for photonic integrated circuits, requiring waveguides to interface various components, from light sources to detectors. Two-dimensional (2D) transition metal dichalcogenide (TMD) heterostructures offer exceptional tunability and direct bandgaps, opening new avenues for on-chip light sources. However, a waveguide-integrated light source based on 2D materials operating in the telecom windows has yet to be realized. In this work, we demonstrate that the creation of a moiré superlattice enables light emission in the optical fiber communication (OFC) O-band (1260-1360 nm) with brightness surpassing that of intralayer excitons in monolayer MoTe2. Furthermore, we realize waveguide-integrated light sources emitting in the O-band by integrating these superlattices with asymmetric nanobeam cavities. This cavity design not only significantly enhances light emission but also improves the spectral purity of the single cavity mode. Moreover, the device output remains remarkably stable across varying pump power in an ambient environment, demonstrating excellent operational stability. The device performance remains unchanged over a nine-month measurement period, highlighting its long-term stability. This work presents a new architecture for on-chip light sources, advancing practical photonic applications. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_03267 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | On-chip integrated light sources with MoS2/WSe2 moiré superlattices at telecom wavelengths Huang, Xingyu Fang, Hanlin Kadkhodazadeh, Shima Nielsen, Monia Runge Lin, Qiaoling Sun, Zhipei Wubs, Martijn Xiao, Sanshui Optics On-chip integrated light sources are essential for photonic integrated circuits, requiring waveguides to interface various components, from light sources to detectors. Two-dimensional (2D) transition metal dichalcogenide (TMD) heterostructures offer exceptional tunability and direct bandgaps, opening new avenues for on-chip light sources. However, a waveguide-integrated light source based on 2D materials operating in the telecom windows has yet to be realized. In this work, we demonstrate that the creation of a moiré superlattice enables light emission in the optical fiber communication (OFC) O-band (1260-1360 nm) with brightness surpassing that of intralayer excitons in monolayer MoTe2. Furthermore, we realize waveguide-integrated light sources emitting in the O-band by integrating these superlattices with asymmetric nanobeam cavities. This cavity design not only significantly enhances light emission but also improves the spectral purity of the single cavity mode. Moreover, the device output remains remarkably stable across varying pump power in an ambient environment, demonstrating excellent operational stability. The device performance remains unchanged over a nine-month measurement period, highlighting its long-term stability. This work presents a new architecture for on-chip light sources, advancing practical photonic applications. |
| title | On-chip integrated light sources with MoS2/WSe2 moiré superlattices at telecom wavelengths |
| topic | Optics |
| url | https://arxiv.org/abs/2504.03267 |