Efficient 1.55 and 2 μm Dual‐Band SOI Grating Coupler for Light Coupling and On‐Chip Wavelength Division (De)multiplexing

Autor: Guanglian Cheng, Qiyuan Yi, Fanglu Xu, Min Yang, Zhiwei Yan, Qiyuan Li, Yongchao Zou, Yu Yu, Li Shen
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Advanced Photonics Research, Vol 4, Iss 7, Pp n/a-n/a (2023)
Druh dokumentu: article
ISSN: 2699-9293
20220014
DOI: 10.1002/adpr.202200149
Popis: Efficient fiber‐chip couplers operating at distinct wavelength bands are key components to combine or split different optical bands for emerging data transmission and nonlinear applications. Herein, a dual‐band silicon‐integrated grating coupler (GC) operated at 1.55 and 2 μm wavebands is designed and demonstrated. The proposed device can simultaneously couple 1.55 and 2 μm wavebands light into the in‐plane waveguides at the same incident angle. Numerical simulations indicate that coupling efficiencies (CEs) are −2.5 and −3.9 dB for center wavelengths at 1561 and 1979 nm, respectively. The dual‐band GC is experimentally demonstrated on a commercially available 340 nm silicon‐on‐insulator wafer. The fabricated dual‐band GC with center wavelengths of 1559 and 1968 nm obtains CEs of −4.9 and −6.4 dB, with 3 dB bandwidths of 81 and 80.4 nm, respectively. Also, the first proof‐of‐concept demonstration of 10 Gb s−1 wavelength division multiplexing transmission at 1.55 and 2 μm waveband is presented based on the fabricated dual‐band GC.
Databáze: Directory of Open Access Journals
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