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Name:1550nm Externally modulated optical transmitter       Model: OT1550E-xx

Externally modulated optical transmitter with SNMP management, indoor, 1550nm, 2 output port, ≥7mW output optical power, 47~862MHz, SBS, 13/16/18dBm or adjustable, imperial F type female port, FC/APC or SC/APC connector, RJ45 and RS232 port, VFD, 19" 1U.
Features:                                               
◇ Narrow bandwidth (Typ.=1MHz), lower noise, DFB continuous wave laser
◇ The operating bandwidth is up to 47~1080MHz
◇ Perfect index: Unique innovation technology, provide excellent CNR, CTB, CSO & SBS
◇ Perfect RS232 communication interface
◇ SNMP network management function optional
◇ 1+1 backup power supply optional
◇ Casing temperature auto-control
◇ Excellent P/P ratio
◇ AGC/MGC mode is optional at spot. OMI can be optimized at spot
 
Description
RFTV is a unidirectional analogue and digital video broadcast. It adopts high efficiency modulation mode for RF carrier wave and its economy, flexibility and bandwidth validity is beyond comparison of IPTV. By adopting EPON, GEPON or P2P access mode to realize triple-play and FTTx, RFTV broadcasting network in 1550nm optical wavelength still plays an important role and 1550nm externally modulated optical transmitter is the core equipment in this system.
1550nm externally modulated technology has no laser chirp, low dispersion distortion, and large extinction ratio, with excellent characteristic within 40~862MHz. External Modulator doesn't generate CSO distortion after reasonable bias. It can be followed by amplifier when used in large area coverage of over-long trunk and local networks. Adopting WDM, multi-wavelength optical channels can be transmitted through one fiber. 1550nm optical fiber CATV follows the current development trend of triple-play and fiber to home.
Parameter

Item
Specification
Optical feature
Optical wavelength
1548~1563nm
1530~1563nm
CATV wavelength
ITU standard
Wavelength ADJ. range
±1.6nm(±200GHz)
 
Wavelength ADJ. mode
±0.5nm stepping
 
Linewidth
=0.651MHz
FWHM(△λ)
Side mode suppression ratio
45dB
SMSR
Extinction ratio
20dB
XP
Equivalent noise intensity
-160dB/Hz
RIN (20~1000MHz)
Output power
2x7
2x5, 2x9 options
Return loss
50dB
Optical fiber connector
FC/APC or SC/APC
RF feature
Work bandwidth
47~862MHz
47~1000MHz
47~1080MHz
Input level
18~28dBmV
AGC
Fatness
±0.75dB
≤±1.5dB
862~1000MHz
Rerun loss
>16dB
47~1000MHz
Input impedance
75ohm
 
RF port
F female
Link feature
Transmit channel
PAL-D/60CH
PAL-D/99CH
 
CNR1
53dB
51.5dB
Back to back
CNR2
≥51.5dB
≥49.5dB
65km optical fiber
0dBm receive
CTB
-65dB
≤-65dB
CSO
-65dB
≤-65dB
SBS restrain
13~18dBm
Adjustable
General feature
Network management interface
RJ45, RS232
Support IE &SNMP
Power supply
90~265V/50/60Hz
-48V optional
Power consume
≤50W
Single power works
Work temperature
Machine temperature
Control automatically
Storage temperature
-40~85℃
Relative humidity
5~95%
Dimension
19inch,1U
Applications
◇ HFC network
◇ PON network

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1550nm optical transmitter

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Technical support: Ningbo Youxin Optic-Electronic Technology Co.Ltd.

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