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Internal Modulated CATV Optic Transmitter

Internal Modulated CATV Optic Transmitter

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.


Junpu JP1510DT is a 1550nm direct modulation optical transmitter with high index and AGC function. It adopts high linearity and low chirp DFB laser, built-in pre-distortion compensation and AGC, APC, ATC closed loop control, which improves the system index obviously. JP1510DT direct modulated optical transmitter can be used in WDM narrow-band multiplexing and IP/QAM.


JP1510DT optical transmitter: CATV wavelength.


Specifications of Internal Modulated CATV Optic Transmitter

PerformanceIndexSupplement
Optic featureWavelength(nm)1548~1565JP1510DT
Output power(dBm)10Optional 3, 8, 10
Return loss(dB)≥55
optical fiber connector
FC/APCOptional SC/APC
RF featureWork bandwidth(MHz)45-862/1000Mhz
Input level(dBmV)20±2MGC
Flatness(dB)≤±0.7545~862MHz
Return loss(dB)>16
Input impedance(Ω)75RF/INPUT
RF test(dB)0±1
Link featureTransmit channel
PAL-D/60CHNTSC/80CH
CNR(dB)≥50-1dBm receive
CTB(dB)≤-63
CSO(dB)≤-57
General featureNetwork management interface
RJ45, RS232Support I.E. & SNMP
Power supply(V)90~265 city power-48VDC optional


Features of Internal Modulated CATV Optic Transmitter

  • Low chirp, high linearity DFB laser, chirp compensation

  • Full-automatic OMI control, AGC & MGC

  • Intuitionistic modulation status display

  • Built-in dual back-up power supply, switch automatically

  • Casing temperature auto-control, ensure the long life of the laser


Application of Internal Modulated CATV Optic Transmitter

  • CATV Networks

  • Local Area Networks

Product Inquiry
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