A New All-Optical Switching Satellite Network Architecture based on Optimized Wavelength-Mapping

This paper proposes an all-optical switching space network architecture in response to the electronic bottleneck problem faced by the future demand for massive data communication in space, based on the current status of single-wavelength transmission in space laser links. The objective is to optimize the wavelength mapping of the network link, enabling the transmission and exchange of data between any nodes in the space network using a single wavelength.One of the challenges in constructing the current all-optical switching network onboard is the immaturity of all-optical wavelength conversion devices, which cannot be effectively applied in space. Additionally, the wireless transmission of single-wavelength laser links in space necessitates the differentiation of transmitting and receiving wavelengths to avoid crosstalk.In this paper, we address the immaturity of wavelength conversion devices by proposing a satellite switching network for single-wavelength transmission, focusing on satellite topology. This approach ensures efficient transmission of the entire network's signal without the need for wavelength conversion.The feasibility of the proposed method and architecture is demonstrated, offering a viable solution for an all-optical switching space network architecture that is not constrained by wavelength conversion devices.