Some investors asked questions on the investor interaction platform: in addition to the signal transmitting end and receiving end, the conversion between photoelectric signals requires optical modules. During the long-distance transmission of optical signal in optical fiber, the optical signal continues to decay. Is it necessary to amplify the signal. Generally, it is necessary to amplify the signal after the distance. Before amplifying the optical signal, whether to convert the optical signal into electrical signal through the optical module, amplify the electrical signal, and then convert it into optical signal through the optical module to access the optical fiber. The transmission distance of the signal in the optical fiber is greatly extended. Therefore, whether to increase the demand for optical modules.
Zhongji Innolight Co.Ltd(300308) ( Zhongji Innolight Co.Ltd(300308) . SZ) said on the investor interaction platform on April 7 that in the long-distance transmission of optical fiber, EDFA optical fiber amplifier is generally used every 80km span, which does not increase the number of optical modules, but the DCI interconnection between data centers will increase the demand for long-distance coherent optical modules. In recent three years, the company has successively released 100g / 200g / 400g series long-distance coherent optical modules, which can be applied to the long-distance DCI interconnection scene of East digital West computing.
