Zhou Chen, He Xiwen, Xiao Mingyue, Ma Deyue, Chen Weibiao, Zhou Zhiping
School of Physical Sciences, University of Science and Technology of China, Hefei, 230026, China.
Aerospace Laser Technology and System Department, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, 201800, China.
Front Optoelectron. 2024 Jun 4;17(1):16. doi: 10.1007/s12200-024-00118-2.
In current documented studies, it has been observed that wavelength converters utilizing AlGaAsOI waveguides exhibit suboptimal on-chip wavelength conversion efficiency from the C-band to the 2 μm band, generally falling below -20.0 dB. To address this issue, we present a novel wavelength conversion device assisted by a waveguide amplifier, incorporating both AlGaAs wavelength converter and erbium-ytterbium co-doped waveguide amplifier, thereby achieving a notable conversion efficiency exceeding 0 dB. The noteworthy enhancement in efficiency can be attributed to the specific dispersion design of the AlGaAs wavelength converter, which enables an upsurge in conversion efficiency to -15.54 dB under 100 mW of pump power. Furthermore, the integration of an erbium-ytterbium co-doped waveguide amplifier facilitates a loss compensation of over 15 dB. Avoiding the use of external optical amplifiers, this device enables efficient and high-bandwidth wavelength conversion, showing promising applications in various fields, such as optical communication, sensing, imaging, and beyond.
在当前已记录的研究中，据观察，利用AlGaAsOI波导的波长转换器在从C波段到2μm波段的片上波长转换效率并不理想，通常低于-20.0dB。为解决这一问题，我们提出了一种由波导放大器辅助的新型波长转换装置，它集成了AlGaAs波长转换器和铒镱共掺杂波导放大器，从而实现了超过0dB的显著转换效率。效率的显著提高可归因于AlGaAs波长转换器的特定色散设计，在100mW泵浦功率下，该设计能使转换效率提高到-15.54dB。此外，铒镱共掺杂波导放大器的集成有助于实现超过15dB的损耗补偿。该装置无需使用外部光放大器，能够实现高效且高带宽的波长转换，在光通信、传感、成像等各个领域展现出了广阔的应用前景。
