Gold Member Since 2009
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Hangzhou Softel Optic Co., Ltd.

Optical Transmitter, Fiber Optical Transmitter, 1550nm Transmitter manufacturer / supplier in China, offering High Power Externally Modulated 1550nm Fiber Optical Transmitter, HD DVB-T2 and DVB-S2 Satellite Finder Meter, Waterproof 4 Output Optical Node with CPU Control Function and so on.

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High Power Externally Modulated 1550nm Fiber Optical Transmitter

FOB Price: US $985 / Piece
Min. Order: 1 Piece
Min. Order FOB Price
1 Piece US $985/ Piece
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Production Capacity: 300pieces Per Month
Transport Package: Each Pieces with Polyfoam, Then Double Brown Box
Payment Terms: L/C, T/T, Paypal, Western Union

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Basic Info
  • Model NO.: ST1550E-xx
  • Wiring Devices: Optical Transmitter
  • Return Loss: ≥50
  • Laser Brand: Jdsu/Ortel/Aoi
  • Connector: Sc/APC or FC/APC
  • Size: 19X17X1.75"
  • Quality Warranty: 1 Year
  • Specification: 19x17x1.75"
  • HS Code: 85176229
  • Type: Optical Transmitter
  • Application: CATV System
  • Fiber out: Single Port/Multiport
  • Power: 220V/110V
  • Each Fiber out: 3-11dB
  • Transmitter Mode: Agc/Mgc Mode
  • Trademark: SOFTEL
  • Origin: China
Product Description

 High Power Externally Modulated 1550nm Fiber Optical Transmitter

Products details :

High Power Externally Modulated 1550nm Fiber Optical Transmitter

  • Characteristic:
  1. High performance: Externally modulated technology, no laser chirp, low dispersion distortion, high extinction ratio, with excellent characteristic within 40~862MHz.
  2. 1+1 powers supply back , up hot-plug function available.
  3. Narrow bandwidth (0.65MHz), lower noise, DFB continuous wave laser, is propitious to reduce the influence of the dispersion.
  4. The operating bandwidth is up to 47~1080MHz.
  5. CNR ≥ 53dB and excellent CTB, CSO index.
  6. SBS: 13~18dBm adjustable.
  7. ITU standard wavelength, ±200GHz (±1.6nm) adjustable.
  8. AGC/MGC mode is optional at spot. OMI can be optimized at spot.
  9. Perfect RS232 communication interface.
  10. Advanced SNMP network management function.
  11. Casing temperature auto-control.
  12. Excellent P/P ratio.
  • Summary:
When ST15xx fiber optical transmitter is applied in the multi-channel transmission, the laser's chirp effect will react
with the link dispersion of the fiber. There will be distortion on the receiver. If working with the EDFA, there will be
serious CSO deterioration. The distortion and deterioration will increase with the longer distance and more channels.
1550nm internal modulation CATV optic transmitter, has the chirp and dispersion compensation inside, and improves
the system index greatly. It can be used in the town where the fund is shortage and the distance is less than 10Km as a transition solution.


  • Test Condition :

Test link path is formed of standard fiber and standard optical receiver. Under the condition of prescriptive link loss,

 laser transmitter modulation depth of each channel being 3.6%, set 59 PAL-D simulative TV channels signal at 47~550MHz

and 33 QAM64 digital modulated signal at the range of 550~750(862) MHz, output level of digital modulated signal is lower 6dB than of simulative signal carrier wave.


Principle Drawing

 5Order Direction


*Model nomination explanation please reference 1310nm laser transmitter equipment model nomination explanation .



  • Work Shop:

  • High Power Externally Modulated 1550nm Fiber Optical Transmitter
  • Our Team:

  • High Power Externally Modulated 1550nm Fiber Optical Transmitter
Performance Index Supplement
Optic feature Laser wavelength nm 1550±10  
Linearity width MHz ≤1 λ
Equivalent noise intensity dB/Hz ≤-160 RIN 20~1000MHz
Side mode suppression ratio dB ≥35 SMSR
Extinction ratio dB ≥20 Xp
Output power dBm 2×7, 2×9, 2×10, 2×5, 4×7,6×7
SBS restrain dBm ≥17  
Return loss dB ≥60  
Optic fiber connector   FC/APC SC/APC or E-2000
RF feature Work bandwidth MHz 45-862  
Input level dBmV 18~28 AGC
Flatness dB ≤±0.75 45~862MHz
Return loss dB >16 45~750MHz
Input impedance Ω 75  
Link feature Transmit channel   PAL-D/60ch  
CNR dB ≥51 10Km optic fiber,0dBm receive
CTB dB ≤-65  
CSO dB ≤-60  
General feature Network interface port   RJ45,R232 Support I.E. & SNMP
Power supply V 90~265 city power -48VDC optional
Power Consume W ≤50 Single power works
Work temp. °C -5~65 Machine temp controlled automatically
Storage temp. °C -40~85  
Work relative temp. % 5~95  
Size " 19×10×1.75 WxDxH

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