1310nm optical transmitter, with front panel digital display showing input level, which adopts high linearity dfb laser of famous brand in the world, and builds-in perfect pre-distortion adjustment circuit and laser apc, atc closed loop control circuit. All the operating parameters are controlled by microprocessor, and the lcd screen on the front panel can display relative operating status and the fault information. Cmot-1310 series is designed and produced by absorbing the advantages of all kinds of 1310nm transmitter from both home and abroad. Featured with high index, multi-function and high reliability, it is suitable for high-end subscribers application 1> adopt word-famous company (ortel, aoi selected by user) advanced dfb laser instrument; max output optical power reach 31mw in ortel laser. Our specialized 2 dfb design max. Output level comes to 31+31mw. Coaxial laser max. 10+10+10+10mw (4*10mw) 2>best looking and convenient design of the front panel digital display. 3> advanced fiber in/ rf in, fiber out function, transit longer distance. 4> add advanced rf pre-distortion circuit, to use as proofreading catv system most important ctb and cso index, and to improve c/n index. 5>use our own gaas( imported mmic) hybrid, assure good output level. 6>built-in perfect power output automatic control circuit and laser thermoelectricity refrigeratory temperature automatic control circuit, insures highest output index and longest life. 7>built-in microprocessor automatic control circuit makes dfb laser always in best work state. 8>front panel blue vfd display, shows various main work status parameters and realizes automatic fault alarm and network management monitor.