米兰体育中国官方网站

米兰体育中国官方网站 Co., Ltd. (Head office: 2-6-4 Otemachi, Chiyoda-ku, Tokyo; President: Keiichi Kobayashi) developed Forward Raman Units that enable longer distance and higher quality signal transmission with improved noise characteristics compared to conventional transmission systems. We will begin shipping samples from July 2023 with manufacturing commencing thereafter.

米兰体育中国官方网站^{(note 1)}is a core technology in optical fiber communications. Backward Raman amplification, which amplifies optical signals from the receiving side, is applied in current optical fiber communications systems. The pump light propagates in the opposite direction to the signal light in backward Raman amplification. Although the impact of noise caused by the pump light is averaged and reduced, there is room to improve the transmission characteristics of the signal light propagating through the optical fiber. On the other hand, with 米兰体育中国官方网站 amplification, the pump light propagates in the same direction as the signal light. The ability to amplify the output power of the signal light from the transmission input point reduces signal light attenuation. Therefore, it is expected that the benefits of Raman amplification can be maximized. However, the impact of pump light noise needed to be addressed (Fig. 1).

The newly developed 米兰体育中国官方网站 uses low noise incoherent light as the pump source. Because our incoherent light has wide bandwidth, it suppresses the interaction between the pump light source and signal light. As a result, it is possible to reduce the impact of noise in the 米兰体育中国官方网站 and bring higher quality signal transmission (Fig. 2).

Also, compared to the conventional backward Raman amplification, signal light attenuation while propagating through a fiber is decreased when adding forward Raman amplification. Therefore, it is possible to maintain high signal quality during transmission (Fig. 3). As a result, transmission distance is extended while also improving the quality of the signal over the same distance. This new 米兰体育中国官方网站 will contribute to solving the issue of reduced transmission distance resulting from faster transmission speeds in recent years.

In addition to these developments, we are working to increase output power of the 米兰体育中国官方网站 by amplifying the incoherent light using our unique Second Raman method^{(note 2)}technology. We will further improve the amplification characteristics by increasing the output power of the optical semiconductor 米兰体育中国官方网站 sources.

The new 米兰体育中国官方网站 will be exhibited at OFC 2023 scheduled to be held on March 7-9, 2023 in San Diego (at the OFS Fitel, LLC booth; Booth number 3229).
OFC 2023