CPRI is the abbreviation of Common Public Radio Interface, a standardized communication protocol widely adopted in mobile communication base stations. CPRI plays the role of transmitting baseband I / Q signals to radio units in traditional BS (base station). CPRI has efficient and flexible I / Q data interfaces for various standards, such as GSM, WCDMA, LTE, etc.

Unlike the data center, the CPRI optical module used in the base station has a constant temperature environment, and its working environment has a large temperature difference all year round. For example, in winter in the north, the temperature is sometimes minus 30 ℃. In such a working environment, the commercial optical module (0 ℃ - 70 ℃) obviously can not work normally, Therefore, the working temperature of CPRI optical modules is industrial grade (- 40 ℃ - 85 ℃).

This article will focus on the 10G SFP+ CPRI optical module, a core component widely used in 4G/5G mobile base station fronthaul networks, covering its definition, core parameters, product types, application scenarios, deployment advantages, and selection guidelines, to provide a comprehensive reference for base station construction and optical module selection.

Key basic parameters:

10G SFP+ dual fiber optical module

The 10G SFP+ dual fiber optical module of ETU-LINK has a maximum speed of 10Gbps, complies with SFP + MSA, 10G Ethernet and 10g CPRI standards, and the transmission distance through OS2 single-mode optical fiber can be up to 80km.

This module adopts 1310nm/1550nm conventional wavelength, DFB laser transmitter and PIN/APD receiver, with stable performance and low cost. It is suitable for point-to-point short-to-medium distance fronthaul links (10km–80km) in conventional base stations, and is the most widely deployed conventional model in 4G base station construction. It supports hot-plugging, convenient for later network expansion and equipment replacement, reducing maintenance difficulty and cost.

10G SFP+ CWDM optical module

The 10g CPRI CWDM SFP + series optical module of ETU-LINK has 8 optional wavelengths (1470nm-1610nm, with an interval of 20nm). It is widely used in the forward transmission network of 10G CPRI mobile base station communication. At the same time, it is compatible with 10G Ethernet, and the transmission distance through single-mode optical fiber can reach 40km.