sfp to sfp converter 3.072Gb/s BIDI 40km 1550nm DFB Module
As an important functional part of the transmitter module, the selection and design must be based on the characteristics of various types of light source devices and matching performance requirements. There are three kinds of semiconductor light-emitting devices: LED, FP laser and DFB laser. Their respective characteristics are as follows: LED light emitting tube has low output power, large divergence angle, wide spectrum, low modulation rate and low price, which is suitable for short distance communication; FP laser has high output power, small divergence angle, narrow spectrum and high modulation rate, which is suitable for medium distance communication; DFB laser is based on FP laser and uses grating filter to make it have only one longitudinal mode output, Its performance is better than that of FP laser, and its cost is higher. It is used in long distance communication.
3G SFP optical transmission module is mainly used to transmit high-definition video signal in studio environment, and the transmission distance is not more than 10 km. Considering comprehensively, 1310 nm FP laser is selected as Tosa laser.
3.072Gbs SFP BIDI 40km 1550nm DFB Module
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