PRELIMINARY DATASHEET| MAY 18, 2007
Model 755MM-U Optical Transmitter
DWDM, 20 km, Low Distortion, Wideband
Emcore’s Model 755MM-U is a directly modulated (DM) DWDM optical
transmitter specifically designed for wideband applications that require
both CATV and DBS signals to be carried over up to 20 km of fiber. This
facilitates networks designs that may use a single transmitter to carry
multiple signals.
The 755MM-U supports full 79-channel NTSC analog signal carriage up
to 10 km. A combination of QAM, DBS, and reduced channel analog
CATV, are supported in links up to 20 km.
Applications
The 755MM family of transmitter products is designed to support various
CATV transmitter applications with a common platform. A 75Ω CATV RF
video input supports frequencies up to 870 MHz. Integrated within the
transmitter design are Emcore’s low chirp control, noise suppression
circuitry, and patented predistortion technology to provide outstanding
performance with any of Emcore’s wide range of cooled broadband
lasers. A second 75Ω RF input supports frequencies up to 2600 MHz for
FTTP, L-Band satellite, and wireless applications.
ꢀVideo signal distribution to
HFC CATV and FTTP nodes
ꢀSupports CATV, QAM, and
1527
DBS signal carriage
ꢀReplacement for externally
modulated transmitters
Features
ꢀDual redundant power
supplies
Performance Highlights
Min
0
Typ
Max
50
Units
°C
ꢀSNMP network interface
Operating Temperature Range
Wavelength (100 GHz ITU Options)
Optical Power
25
-
ꢀDual RF inputs for CATV and
DBS
1530
10
1560
-
nm
ꢀAvailable on 100 GHz spaced
-
dBm
ITU DWDM C-band channels
Frequency Response (75Ω CATV Port)
(75Ω L-Band Port)
47
-
-
870
MHz
ꢀOptimized RF integration of
predistorter, amplifiers, and
laser
950
2600
CNR (47 – 870 MHz)
52
-
-
-
-
-
-
-
dB
dBc
dBc
dBc
dBm
ꢀComplete, efficient laser bias
and TEC control circuitry
CSO (47 – 870 MHz)
-56
-63
-60
15
CTB (47 – 870 MHz)
-
ꢀOEM/ODM opportunities
available through Emcore
C/I (3rd order, 950 – 2600 MHz)
SBS Suppression Capability
-
-
Noise and distortion performance above assumes 79 channel NTSC loading with no QAM, 0 dBm
received optical power, 10 km SMF-28 fiber or equivalent. See following pages for complete
specifications and operating/test conditions.
For more information on this and other products:
Contact Sales at Ortel 626-293-3400, or visit www.emcore.com.