YOC-1550 external modulation optical transmitter products are new high-performance 1550nm external modulation CATV optical transmitter. The transmitter is 1U height, can be easily installed in the 19 "rack .1550 transmitter for the 1550 wavelength dual 7dBm light output, the output signal spectral line narrow, in the long-distance transmission, even more advantages. The main device using JDUS, Fujitsu, MITSUBISHI DFB low noise, narrow linewidth, continuous wave laser and JDUS, AVANEX CATV high linearity external modulator with thermoelectric cooler. As the key components adopt the international brand and our company system optimization control technology, SMNP network control technology , So that the machine's technical performance indicators fully meet the standards of similar imported equipment for cable television and telephone communications, to provide high-quality images, digital or compressed digital signal long-distance transmission.