The optical module (optical module) is composed of optoelectronic devices, functional circuits and optical interfaces. The optoelectronic device includes two parts: transmitting and receiving.
Simply put, the function of the optical module is to convert the electrical signal into an optical signal at the transmitting end, and after transmitting through the optical fiber, the receiving end converts the optical signal into an electrical signal.
The optical module is an optoelectronic device that performs photoelectric and electro-optical conversion. The transmitting end of the optical module converts electrical signals into optical signals, and the receiving end converts optical signals into electrical signals. Optical modules are classified according to the packaging form. Common ones include SFP, SFP+, SFF, Gigabit Ethernet Interface Converter (GBIC), etc.
The transmitting part is: the electrical signal with a certain code rate is processed by the internal drive chip and then drives the semiconductor laser (LD) or light-emitting diode (LED) to emit the modulated light signal of the corresponding rate. The internal optical power automatic control circuit makes The output optical signal power remains stable. Sfp Module,Scodeno Sfp Transceiver,Scodeno Optical Transceiver,Gpon Optical Sfp Module Shenzhen Scodeno Technology Co.,Ltd , https://www.scodenonet.com
Mr. Qi of Beijing purchased several sets of high-end wooden lamps in a lighting market in Beijing. At the time of purchase, the salesperson indicated that the fixtures were not well-assembled, and the store was not responsible for the installation. After returning home, Mr. Qi discovered that in addition to a large variety of various parts in the lamp box, there was only a simple circuit diagram, which ordinary people could not understand. When Mr. Qi contacted the store again, the answer was that the on-site service required an installation fee.
Today, home appliances such as air conditioners and washing machines provide door-to-door installation services and cleaning services, while the lighting industry still does not have similar services. In the field of home appliances, there are laws that require related accessories to be maintained for a five-year supply period, but this rule does not apply to lamps.
In view of the lack of after-sales service in the current lighting market, experts in the industry pointed out that, like traditional household appliances such as air conditioners, refrigerators, and color TVs, the competition in the lighting market is extremely fierce, but the current competition is only at the low-end price competition. Many lighting manufacturers do not realize the importance of after-sales service, and have not seen consumers' desire for after-sales service.
In the interview, the reporter learned that with the upgrade of consumers' consumption quality, the lamps are no longer a single lighting demand, but are becoming more and more an ornament. The quality and price of the lamps are taking off. Lamps of hundreds of thousands or even tens of thousands of yuan have become extremely common. With the upgrade of the consumption quality of lamps, consumers pay more and more attention to after-sales service. In many cases, after-sales service has become an important factor affecting consumers' purchase.
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The receiving part is: the optical signal of a certain code rate is input into the module and then converted into an electric signal by the light detection diode, and the electric signal of the corresponding code rate is output after the preamplifier.