DCM
 
 
Tel: +86-571-86625003
Email1: info@optictrans.com
Email2: kally@optictrans.com (kally@vip.126.com)
WhatsApp: +86 13967163428
Skype: hightech086
 
 
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  Products
OPRA-1550D Distributed Raman Fiber Optical Amplifier
   Content
1. Description
Erbium-doped fiber amplifier (EDFA), due to spontaneous emission (ASE) noise and cascades, the accumulation of spontaneous emission noise, will greatly reduce the SNR of system receiver, thus limits the system capacity and non-relay distance. The new generation of Raman fiber amplifier (OPRA-1550D) achieves the amplification of the optical signal by the optical gain generated by the Stimulated Raman scattering (SRS). FRA has a wide gain spectrum; the gain bandwidth can be further broadened by the use of multi-wavelength optical pump. After many years of research and network testing, our company develop and produce the series of OPRA-1550D Raman fiber amplifier, and introduce it to the ultra-long haul optical fiber CATV transmission, specifically in combination with the EDFA applications, the improvement of the indicators of the link is particularly evident, thus get more flat gain spectra and higher optical signal to noise ratio (OSNR).
This series of products adopt 1430nm or 1455nm high linearity, optical isolation, the DFB, thermoelectric cooling DFB laser produced by JDSU, Fitel and other world-renowned semiconductor companies as the pumping source. In the interior of the machine is equipped with the optical output power stability circuit and laser thermoelectric cooling device, temperature stability control circuit to ensure optimal machine performance and long-life laser stability. The microprocessor software monitor the lasers’ working state, the Digital Panel (VFD) displays the operating parameters.
 
2. Features
(1) High quality: Raman fiber amplifier is in distributed structure, we can greatly reduce the optical power into the fiber, so that SBS has been expanded. At the same time the nonlinear distortion performance will be improved significantly.
 
(2) Reliability: The 19 "1U rack, built-in high-performance switching power supply, Support hot-swappable. it can work at 90~265Vac City Network Voltage, As well as an optional DC48V power supply (reservations required); Chassis cooling automatic temperature control. Mechanical cooler (Dual fans) on back panel helps to make heat dispersion thus to protect the pump laser.
 
(3) Intuitive: The laser is the most expensive machine components, machine equipped with microprocessor monitors the working state of the laser, the panel LCD window displays the operating parameters.
 
(4) Network type: Select All-piece status monitoring transponder guarantee to meet the national standard, it enables network management monitoring capabilities through RJ45 port.
 
3. Technical specification
Items
unit
Specification
Operating wavelength range
nm
1540~1560 (CATV area)
1528~1563 (C-Band CATV, optic communication DWDM)
1526~1610 (L-Band, optic communication DWDM)
Pump optical output power
mW
500
Raman-off gain
dBm
6~16
Gain flatness
dB
<2.0
Noise Figure (NF)
dB
0
Optical output power stability
dB
<±0.5
Polarization dependence loss
dB
<0.2
Polarization dependence gain
dB
<0.4
Polarization mode dispersion
ps
<0.2
Optical connector (IN/OUT)
 
SC/APC or FC/APC or customer specify
SNMP network management interface (optional)
 
RJ45
Power supply
VAC
90~265VAC or -48 VDC
Power consumption
W
50
Working temperature
-5~65
Storage temperature
-40~80
Operating relative humidity
%
5~95
size
‘’
19×14.5×1.7.5 (1U,19’’)
Weight
kg
5.5
 
4. Block diagram
 
5. Product series
Model
Raman Fiber Optical Amplifier
Gain in dB
OPRA-1550D-6
Raman switch gain≥6
OPRA-1550D-8
Raman switch gain≥8
OPRA-1550D-10
Raman switch gain≥10
OPRA-1550D-12
Raman switch gain≥12
OPRA-1550D-14
Raman switch gain≥14
OPRA-1550D-16
Raman switch gain≥16
 
Hangzhou OpticTrans Communication Tech. Co., LTD.
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