1550nm direct modulation CATV fiber transmitter built-in EDFA. It adopts high linearity, low chirp DFB laser, built-in pre-distortion compensation and APC
Provide IPTV, VOD value-added service in second-grade service area (Sub-HE).
Analog digital mixed transmit
Pure digital load <40Km.
WDM narrow band multiplex >70Km.
External modulation technology, with the laser working in direct current, has the advantage of no laser chirp, low dispersion distortion, large extinction ratio, and high speed. It also has the disadvantage of high cost and high difficulty in manufacturing.
Direct modulation will lead to high laser chirp (Laser's bias current is modulated by signal and the optical spectrum shifts and shakes). Laser chip will interact with dispersion effect caused by standard single mode fiber (SMF-28), which will generate serious distortion in the place of 1550nm. This kind of distortion will become more serious with the increase of transmission distance, bandwidth and channel number.
At present, international high performance 1550nm direct modulation has no obvious performance inferior while transmitting an analog and digital multiplexing full channel signal with transmission distance ≤ 15Km or transmitting digital load with transmission distance ≤ 40Km.
Fiberbit's Built in EDFA based CATV fiber transmitter is a kind of 1550nm direct modulation optical transmitter built-in EDFA. It adopts high linearity, low chirp DFB laser, built-in pre-distortion compensation and APC, ATC closed loop control. A built-in low noise EDFA can supply 1~8 way, 13~17dBm output power. It can be used in FTTx ( ≤ 10Km) of second-grade service area (Sub-HE), also can be used in WDM narrow band multiplex and IP/QAM.
Low chirp, high linearity DFB laser, chirp compensation.
Dual module RF driver , high efficient laser pre-distortion adjustment.
Perfect APC, ATC closed loop control
Intuitionist modulation status display.
Built-in dual power supply back-up, switch automatically.
Casing temperature auto-control, ensure the long life of the laser.
FB-CT-1550-ED: CATV wavelength
FB-CT-ITU-1550-ED: ITU wavelength
Side mode suppression ratio
Equivalent noise intensity
Total output power
Each port output power
Number of output port
Differeace of each output power
Polarization dependence gain
Polarzation mode dispersion
Pump power leakage
optical fiber connector
Network management interface
Support I.E. & SNMP
90~265 city power
Single power works
Work relative humidity
19×14.7×1.75 ( " )
483×373×44 ( mm )
CATV fiber transmitter built-in EDFA, output power XX = 17. 20, 22, 23 dbm, YY - distance i km, 5, 10 or 15 km, ITU band.
CATV fiber transmitter built-in EDFA, output power XX = 17. 20, 22, 23 dbm, YY - distance i km, 5, 10 or 15 km, CATV band.
SELF STUDY BLOG
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