FWA-1550H-64 port 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
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