100G SR4 Optical Module Introduction
100G SR4 optical module have the advantages of high transmission rate, mature technology, and low cost, and have been widely used in data centers and data communication access networks. The 100G SR4 optical module
100G Optical Module Market Prospects
In recent years, with the rapid development of e-commerce, high-definition transmission, cloud computing and other services, people’s demand for data transmission bandwidth is getting higher and higher. Nowadays, ports with a transmission rate of 100 Gbps have been widely used in data center switching equipment to realize centralized processing, analysis and storage of data services. The downlink ports in the data center and access network are very urgent for short-distance transmission. 100G SR4 parallel optical transceiver module, as the main optical module product used in high-speed and large-capacity communication systems, has the advantages of high transmission rate, mature technology and low cost. , will have huge market prospects.
How 100G SR4 Optical Module Works
According to the 100G SR4 optical module protocol requirements, the optical module contains 4 channels of transmitting and receiving, which can realize the electro-optical and photoelectric conversion of 4 channels of 25 Gbps signals. At the transmitting end, four 25 Gbps electrical signals enter the vertical-cavity surface-emitting laser (VCSEL) driver chip of the 100G optical module through the golden finger, and the VCSEL driver chip outputs bias current and modulated current to drive the VCSEL array to emit light. Electro-optical conversion. At the receiving end, the 4-way 25 Gbps optical signals are coupled to the photodiode (PD) array through the optical fiber array, and the 4-way optical signals are converted into 4-way current signals, and the 4-way current signals pass through the transimpedance limit. Amplifier (TIA/LA) chip converts into 4 channels of 25 Gbps voltage signal to complete photoelectric conversion.
IIC communication is used between the control chip (MCU), the VCSEL driver chip, and the trans-impedance amplifier chip (TIA/LA). Its main tasks include: Initializing the VCSEL driver chip and the trans-impedance amplifier chip; embedding the SFF8636 standard protocol; Sampling completes the real-time monitoring of the internal working voltage, temperature, bias current, transmitted optical power, and received optical power of the module; IIC data communication with external switches is carried out according to the protocol.
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