1550nm Direct Modulation CATV Optical Transmitter

Product Description

Product description: External technology laser working with direct current, has no laser chirp. It has advantage of no chromatic dispersion distortion, large extinction ratio, high speed and disanvantage of high cost, high difficulty in producing. Direct modulate will lead to high laser chirp (laser's bias current will be modulated by signal, opercal effect will occur high distortion in ***0nm. This kind of distortion will become more serious companied with the increase of transmission distance, bandwidth and chnnel number. At present, internationally, high feature ***0nm direct modulate has no obvions feature inferior, when transmit a analog and digital moltiplex full channel signal, transmission distance≤*0Km or digital load with transmission distance≤*0Km. Huatai HT***0B is a kind of ***0nm direct modulate optical transmitter, standard and without AGC function. It adopts high lineaity, low chirp DFB laser, bulid-in pre-distortion compensation and closed loop AGC, APC, ATC control, obviously improve the system index. It can be used in full channel singal FTTx (≤*0Km), also can be used in DWDM narrow band multiplex as well as IP/QAM. Product feature: Low chirp, high linearity DFB laser, chirp compensation. Dual module therefore drive, high efficient laser pre-distortion regulate. Full automatical laser modulation index control, AGC & MGC. Intuitionistic modulater situation display Build-in dual power supply back-up, automatically switch Automatically casing temperature control, ensure laser's long life of working Main application: Sub-headend provide IPTV, VOD value-added service. Analog digital mixed transmit <*0Km. Pure digital load <*0Km. DWDM narrow band multiplex >*0Km.