Emcore’s Model 755MM-X is a recently developed 1550 nm transmitter
suitable for link lengths of up to 65 km. The 75Ω RF video input
supports frequencies up to 870 MHz. Also integrated into the RF/Optical
design are Emcore’s low chirp control and noise suppression circuitry.
Integrated within the design is Emcore’s patented pre distortion
technology to provide outstanding performance with any of Emcore’s
wide range of cooled broadband lasers. These modules may be made
available with dual power supply options and SNMP capability.
The 755MM-X adopts the Hybrid Modulation (patent pending) scheme
with superior performance, which is similar to that of External
Modulation and easy tuning which is similar to that of Direct Modulation,
making it ideal for either FTTP or HFC network applications. The
performance specifications indicated below are subject to change.
Applications
Video signal distribution to
HFC CATV and FTTP nodes
Video overlay in passive
optical networks (PON)
Replacement for Externally
Modulated Transmitters
Features
Enhanced Optical Spectrum
Reshaping Technology
Optimized RF integration of
predistorter, amplifiers and
laser
Dual redundant power
supplies
Supports SNMP protocol
Complete, efficient laser bias
and TEC control circuitry
OEM/ODM opportunities
available through Ortel
Digital monitoring and control
ITU Wavelengths
Performance Highlights
Parameter
Operating Temperature Range
Wavelength (Multiple Options)
Optical Power
Frequency Response
CNR
CSO
CTB
SBS Suppression Capability
RF Input Return Loss
Optical Return Loss
Min
0
1540
6
47
-
-
-
-
16
40
Typ
25
-
-
-
52
-
-
-
-
-
Max
50
1560
-
870
-
-65
-65
16
Unit
°C
nm
dBm
MHz
dB
dBc
dBc
dBm
dB
dB
-
-
Noise performance above assumes 79 channel NTSC loading with no QAM, 0 dBm received
optical power
For more information on this and other products:
Contact Sales at Ortel 626-293-3400, or visit www.emcore.com.
755MM-X 1550 nm Transmitter
PRELIMINARY DATASHEET- AUG, 2006
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are
absolute stress ratings only. Functional operation of the device is not implied at these or any other conditions in
excess of those given in the operational sections of the data sheet. Exposure to absolute maximum ratings for
extended periods can adversely affect device reliability.
Parameter
Operating Temperature Range
Storage Case Temperature Range
Symbol
T
OP
T
stg
Min.
0
-20
Max.
50
65
Unit
°
C
°
C
RF Characteristics
Parameter
Bandwidth
Frequency Response
RF Input Level
CNR
CTB
2
2
Condition
-
47-870 MHz
-
-
-
-
47 – 870 MHz RF Input
47 to 870 MHz
47 to 870 MHz
Min
47
-
-13.7
-
-
-
-
16
16
Typ
-
-
-11.7
52
-
-
75
-
-
Max
870
1.5
1
Unit
MHz
dB
p-p
dBm
dB
dBc
dBc
Ohms
dB
dB
-9.7
-
-65
-65
-
-
-
CSO
2
Input Impedance
75Ω Video Input Return Loss
75Ω Test Port Input Return Loss
1.Excludes tilt component.
2.CW carriers, 79 channel NTSC channel plan, 4 MHz noise bandwidth, 0 dBm received power, SMF-28 or equivalent.
Optical Characteristics
Parameter
Optical Output Power
SBS Threshold
Side Mode Suppression Ratio
Optical Return Loss
RIN
1
Condition
-
65 km SMF-28
-
APC style connector
Back to Back
Min
-
-
30
40
Typ
6
-
-
-
-160
Max
-
16
-
-
Unit
dBm
dBm
dB
dB
dBc/Hz
1. In order to prevent reflection-induced distortion, the laser must be connected to an optical cable having a return loss of at least 55 dB for discrete
reflections and 30 dB for distributed reflections
2 of 5
755MM-X 1550 nm Transmitter
PRELIMINARY DATASHEET- AUG, 2006
Power Requirements
Parameter
AC Input Range
DC Input Range
Power
Min.
94
50
36
-
Max.
245
60
60
50
Unit
Vac
Hz
Vdc
W
Package Characteristics
Parameter
Height
Width
Depth
Weight
Dimension
1.75 (44), 1U
19 (483)
17.77(452) with fans
9.0 (4)
Unit
in. (mm.)
in. (mm.)
in. (mm.)
lbs. (kg.)
Part Number / Ordering Information
755MM-X
-
-
-
- XX -
Channel Plan
A = NTSC 79-Ch
Output
06=06 dBm (Std)
SBS
A = 16 dBm (Std)
Connectors
SC = SC/APC
FC = FC/APC
EC = E2000/APC
ITU Wavelengths
ee= 21, 1560.61nm
:
ee= 45, 1541.35 nm
AC Power Cord
NA = N.AMERICA
3 of 5
755MM-X 1550 nm Transmitter
PRELIMINARY DATASHEET- AUG, 2006
ITU Wavelength Channel Designations
Channel
21
23
25
27
29
31
33
35
37
39
41
43
45
Wavelength
(nm)
1560.61
1558.98
1557.36
1555.75
1554.13
1552.52
1550.92
1549.32
1547.72
1546.12
1544.53
1542.94
1541.35
4 of 5
755MM-X 1550 nm Transmitter
PRELIMINARY DATASHEET- AUG, 2006
Laser Safety Information
This product meets the appropriate standard in Title 21 of the Code of Federal Regulations (CFR). FDA/CDRH
Class IIIb laser product. This device has been classified with the FDA/CDRH under accession number 0220800.
Single-mode bulkhead receptacles with internal SC/APC connectors (standard).
Wavelength = 1.5
μm.
Maximum power = 50 mW.
Product is shipped with internal AC/DC and DC/DC power supply converters.
Caution: Use of controls, adjustments and procedures other than those specified herein may result in
hazardous laser radiation exposure.
Information contained herein is deemed to be reliable and accurate as of issue date. EMCORE reserves the right to change the design or specifications of
the product at any time without notice. EMCORE and the EMCORE logo are trademarks of EMCORE Corporation.
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