1550nm CATV / ITU-TG.692 tunable External Modulation Optical Transmitter

LCT5EM all C band tunable CATV external modulation optical transmitter, is an industry-leading and pioneer product. With choices of tunable wavelength 1548~1563nm & ITU-TG.692, it provides the flexibility in various application. User can configure, switch and route etc wavelength management function quickly, accurately. High wavelength accuracy, high wavelength stability, fast tuning rate, perfectly fit in the applicaotin of the NGB (Next Generation Broadcasting) DWDM system. It’s high wavelength flexibility and replaceability will become the development direction of next generation broadcast television network ( NGB ) external modulation optical transmitter.

 

  • High performance: Externally modulated technology, no laser chirp, low dispersion distortion, high extinction ratio, with excellent characteristic within 47~862MHz.
  • Narrow bandwidth (0.65MHz), lower noise, DFB continuous wave laser, is propitious to reduce the influence of the dispersion.
  • ITU standard wavelength, ±200GHz (±1.6nm) adjustable.
  • Operating bandwidth is up to 47~1000MHz.
  • CNR ≥ 53dB and excellent CTB, CSO index.
  • SBS: 13dBm
  • AGC/MGC mode is optional at spot. OMI can be optimized at spot.
  • Low noise, narrow linewidth (Typ.=0.3MHz)
  • SNMP Network management.
  • Excellent cost performance.
Optical specifications
Parameter Unit Min Typ Max Ramark
Operating wavelength nm   1548~1563   LCT5EMC
  nm   ITU-TG.692   LCT5EMU
Wavelength adjustment range nm   ±1.6 ( ±200GHz )   LCT5EMU
Wavelength adjustment mode     ±0.05nm stepping   LCT5EMU
Wavelength stability Pm/℃   -1~0   Tc=20~70℃
Linewidth MHz   Typ.=0.65   FWHM( △λ ) ( -3dB fullwidth )
Side mode suppression ratio dB 45     SMSR
Equivalent noise intensity dB/Hz     -160 RIN ( 20~1000MHz )
Number of output port     2    
Output power of each port dBm    13   2×5
  12   2×7
  11   2×9
  10   2×10
  8.5   2×11
  7.0   2×12
  4.5   2×13
Return loss dB 50      
Connector   SC/APC  Optional LC/APC, FC/APC
RF specifications
Work bandwidth MHz 47   862 Optional 47~ 1000MHz
Input level dBmV 18   28 AGC
Flatness dB -0.75   +0.75  47~862MHz
  dB -1.5   +1.5  862~1000MHz ( Optional )
Return loss dB 16      
Input impedance Ω   75    
RF connector   F-female  
SBS restrain dBm 13   18 Adjustable
Transmit channel   PAL-D/60Ch PAL-D/99Ch    
CNR1 dB >53 >51.5   back to back
CNR2 dB >51.5 >49.5   65km optical fiber, 0dBm receive
CTB dB <-65 <-65    
CSO dB <-65 <-65    
SBS restrain dBm    13, 16, 18   adjustable
General specifications
SNMP network management interface     RJ45    
Communication interface     RS232    
Power supply VAC 90   265 50/60Hz
  VDC -72 -48 30  
Power consumption W     50  
Operating temperature -5   +65  
Storage temperature -40   +85  
Operating relative humidity % 5   95  
size (WxDxH) mm 483x386x44 S type
    483×455×44 L type
LCT5EMx aa-bbb-cc-dd
 
x – Operating wavelength/ aa- Output power/ bbb- Bandwidth/ cc- connector type / dd- Power supply
x

C – CATV 1548-1563nm

U – ITU-TG.692 (200GHz)

aa 05- 4.5dBm
07- 7dBm
09- 8.5dBm
10- 10dBm
11- 11dBm
12- 12dBm
13- 13dBm
bbb 086- 47-862Mhz
100- 47-1000Mhz
cc FA- FC/APC
SA- SC/APC
LA- LC/APC
dd 22- 220V AC
11- 110V AC
48- -48V DC
42- -48V DC & 220V AC