FWA-1550H series EYDFA optical amplifier Product
DescriptionFWA-1550H series EYDFA optical amplifier is the latest
equipment of optical transmitting system for CATV FTTH/FTTP. In
detail, there is one way CATV input, output 1550nm with
30 to 40dBm total power. Ordinary erbium-doped fiber amplifier
(EDFA) has the advantages of low noise, high gain, wider bandwidth,
highly efficient pumping, and stable operating, which is widely
used in CATV systems. However, along with the implementation of
fiber to the house (FTTH), system C/N will be worse significantly
when EDFA uses as cascade amplification. Therefore, EDFA is
required to produce high saturation output power and low distortion
as shown as 13dBm to 23dBm (approximate. 27dBm limited) for EDFA
saturated output power. Moreover, the gain fiber of EDFA is
single-mode and single-packed fiber. The optic of the pump is
directly coupled to the fiber but the diameter of the fiber is very
small therefore it requires a single mode of pump optic. The
semiconductor of single mode only supports hundreds of milliwatts
of output power and it is limited by the area of the pump which
makes high-power pump optic cannot coupling. It consequently causes
serious output power of the optical laser. In case, it develops
double-cladding fiber internationally and solves the problem of the
listed weakness of single-packed fiber which improves 1 to 2 levels
for output power. It then drives the development of high-power
optical amplifiers. After three years of research, high-power
ytterbium-erbium co-doped double-cladding fiber amplifier was
developed to fit the requirement of FTTH and FTTB after conquering
many technical difficulties.This series product
adopts LUMENTUM, IPG, etc multimode high power pump
laser as the pump source, and American OFS closed beam splitter as
the double-cladding synthesizer. Built-in stable optical power
circuit and laser thermoelectricity freezer guarantee the best
performance and long life cycle operating. Microprocessor software
monitors the operating status of the laser which shows on the LCD.
Once the operating parameter of the laser deviates from the range
of the set value, the microprocessor will cut the power supply of
the laser automatically and the red light turn will turn on with an
alarm (prompting a fault caused on
LCD).1.2 Features1.2.1 High Quality: Adoption of
multimode high power pump laser and power is optimized by
software which maximizes lower NF of EDFA rival to normal EDFA. It
makes the system get superior CNR through power optimize balancing
technique.1.2.2 Reliability: adoption of 19″2U standard case,
built-in high-performance external modular switching power supply,
operating under AC90 to 265V, optional DC48V power supply
(pre-order) hot-plugging supported, automatic temperature control
case heat dissipation with dual power cold&hot
backup.1.2.3 Intuitive: The microprocessor monitors the
operating status of the pump laser which is the most valuable
part of the equipment, operating parameters show on the LCD
display.1.2.4 Network Management: Optional type status
monitoring transponder certainly satisfy national, SCTE, HMS, and
WEB standard, it realizes network management monitoring
function.1.2.5 Adjustable Output Power: The equipment is advanced
designed which satisfies a bigger range of adjustment from lower to
-2dBm (special offer).1.2.6 High Power Output: Combined output
power has a maximum of 30~45dBm and multiple output configuration
is available for users' requirement.1.2.7 WDM Insertion: It is
available to integrate the FWDM module if the user needs which
is convenient when combining GPON, and EPON.1.2.8 Connecting
Safety Mode: To prevent the optical patch cord end face from being
burnt when the optical output is connected, enable this mode to
reduce the output power direct to 19dBm during
connection. Once turn off this mode, it returns to the
original set power. Detailed PhotosThe machine's microprocessor
software owns the laser working condition monitoring, digital
panel displays, fault alarm, network management, and other
functions. For inquiries, press the MENU button panel, and then
press ENTER to confirm, press UP or DOWN to search or set different
parameters and setting items.1. After power-on upside
display:"CATV EDFA",downside display:"LASER POWER OFF"(see
4-1-1)," CATV EDFA"means name of equipment,"LASER POWER
OFF"means pump is powered off;Switch on laser lock and shows
" CATV EDFA""FWA-1550H-32×XX" normally(see
4-1-2),"FWA-1550H-32×XX" means models,32 means 32 ways
output,XX means output power in unit of dBm.
2. Inquiry Function: Press the Menu button entry inquiry
parameter inquiry(4-2-1), then press ENTER confirmed power
supply module ±5V voltage 1 inquiry (4-2-2), press
DOWN inquires 2 power module ±5V (4-2-3); press UP
again entry inquiry of prepositional amplifier laser
current and temperature(4-2-4), inquiry of cooling or hitting
current and power of preposition amplifier(4-2-5), inquiry of
pump 1 curre
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