As the mainstream optical module in the optical module market, the 100G QSFP28 optical module has been drawing attention due to its advantages of small size, high speed, high density, and low cost. However, there are many types of 100GQSFP28 optical modules, such as ER4, PSM4, 4DWDM, and SR4. In this article, Yifeiyang Communications will give you a detailed introduction to the package, characteristics and parameters of the 100G QSFP28 SR4 optical module. First, the introduction of 100G optical module The 100G optical module is a product of an optical module that was born in order to adapt to the trend of the Internet market to evolve from 10G to 40G and 100G. The transmission rate is 100G, which plays a crucial role in building a 100G network system. Second, 100G QSFP28 SR4 optical module features The 100GQSFP28 SR4 optical module consists of the first clock data recovery module, the array driver module, the laser emission module, the photoelectric conversion module, and the electrical signal processing module. Let's briefly analyze its working principle. 1. First, the data recovery module will perform data recovery processing on the input 100G electrical signal, and then input the processed electrical signal to the array driver module; 2. The array driver module then performs the modulation and demodulation processing on the received electrical signals and then transmits them to the laser emitting module. 3. In this part of the laser emission module, the electrical signal is converted into an optical signal and then coupled to the optical fiber; 4. The coupled optical signal is transmitted to the photoelectric conversion module, and then converted again to an electrical signal and output to the electrical signal processing module. 5. Finally, the electric signal processing module is used to sequentially convert the electric signal to the main control terminal after performing the current conversion voltage and the amplification processing. Its characteristics are as follows: characteristic · 4-channel full duplex transceiver module Transmission rate up to 26Gbps per channel Supports both 40GE and 56GE FDR rates 4-channel 850nm VCSEL array · 4-channel PIN photodetector array Receiver and transmitter built-in CDR circuit ·Support CDR bypass Low power consumption <2.5W · QSFP hot-swappable package The maximum transmission distance of the OM3 multimode fiber (MMF) is 70m, and that of the OM4 MMF is 100m ·Optical fiber interface accepts single MPO · Built-in digital diagnostics Operating temperature 0°C ~70°C · 3.3 v supply voltage · Meet RoHS-6 (Lead-Free) Third, 100GQSFP28 SR4 optical module package All the above-mentioned components, including the first clock data recovery module, the array driver module, the laser emission module, the photoelectric conversion module, and the electric signal processing module, are to be printed on the QSFP+SR4 parallel optical module. The circuit board is reserved on the welding port, which can help it realize the electro-optical coupling of the transmitting end and the receiving end of the QSFP+SR4 optical module in an active coupling manner. This method is simpler and easier to operate than the traditional passive coupling of individual transmit and receive chips. Through the above we already know the packaging, principle, and characteristics of the 100G QSFP28 SR4 optical module; then, what are the parameters of the 100G QSFP28SR4 optical module? We all know that the parameters of an optical module are related to the performance and service life of an optical module, and what indicators do an optical module need to look at? Output optical power: the output optical power of the module under normal operating conditions of the module; Emission eye diagram: The input waveform is input into the vertical amplifier of the oscilloscope, and the sawtooth wave period generating the horizontal scan is synchronized with the symbol timing. On the oscilloscope, an image similar to the human eye can be observed, which is called an eye diagram; Center wavelength: In the emission spectrum, the wavelength corresponding to the point connecting the 50% maximum amplitude line segment; Side mode suppression ratio: Ratio of the highest spectral intensity to the second highest spectral intensity in the emission spectrum under normal operating conditions (dynamic); Spectral width: the maximum full-width at which the maximum peak of the center wavelength of the master module falls -20 dB; Extinction ratio: The minimum value of the ratio of the signal average optical power to the space average optical power under all-modulation conditions; Turn off the optical power: set the TxDisable pin of the module to the corresponding level, and the module shuts off its own laser driving circuit. At this time, the output optical power of the module is the optical power of the switched off module; Transmission cost: The degree to which the module transmitter degrades after transmitting a specific length of fiber; Receiver sensitivity: The minimum input average optical power that the receiver can receive at a certain bit error rate (BER = 1*10 negative 12). Saturation optical power: The maximum input average optical power that a receiving component can receive at a certain bit error rate (BER = 1*10 negative 12); Optical alarm: The input optical power of the input module is changed from big to small or from small to large at the operating speed of the module. When the optical power changes to a certain value, the alarm output signal level of the module is reversed. power; Alarm lagging: the difference in alarm signal thresholds; Gigalight provides customers with a one-stop optical network device and low-cost optical communication products through a proprietary design and supplies a series of 100G QSFP28 SR4 optical module products. For more information, please visit the official website of Yifeiyang Communications (gigalight.com.cn). CD Car Phone Holder,Car CD Slot Mount Holder,Car Phone Mount Holder,Car Accessory CD Phone Holder Ningbo Luke Automotive Supplies Ltd. , https://www.nbluke.com