PRELIMINARY DATA SHEET
|
MARCH 17, 2008
Applications
High performance supertrunking links
High power distribution networks
Redundant ring architectures
FTTx networks
2100 Series 1550 nm Externally Modulated Transmitter
Features
Single or Dual Optical Outputs
Front Panel RF Test Point
RS232 Control Interface
Electro-Fluorescence Status Display
OMI / RF Gain Adjustment
AGC Select: CW, Video, Manual
(No AGC)
Industry Leading Field Adjustable SBS
Suppression
Field Adjustable Electronic Dispersion
Compensation (EDC)
EMCORE’s DEMT/SEMT/HEMT/FEMT 2100 series product line is a family of state-
of-the-art high performance 1550 nm externally modulated CATV fiber optic
transmitters. Packaged in a convenient 1U 19” rack housing, this line of transmitters
couples high optical output powers, up to 11.0 dBm, with low optical linewidth
resulting in unmatched performance. The characteristics of the EMCORE transmitter
design exhibit high CNR when coupled with one or more EDFAs over 100km, or used
stand alone up to 80km. The optical modulator, combined with the proprietary
predistortion circuit, provides superior CTB and CSO performance with SBS
suppression levels of greater than 20 dBm. Newly introduced features such as built in
field adjustable SBS control and electronic dispersion compensation allow these
transmitters to be quickly optimized in the field for any link or application without the
need to procure specifically tuned transmitters. This affords the system designer a
level of flexibility previously unknown in the CATV market place. All of these
characteristics together provide a line of high quality; industry-leading transmitters
that have the versatility needed to support HFC networks far into the 21
st
century.
The DEMT series transmitters are designed to be employed as a low cost, high
performance solution for applications where the required fiber length is in the range
of 20 to 50 kilometers. Advanced, high power, DFB laser technology allows these
transmitters to be fielded without the use of expensive and performance degrading
EDFAs. This unique externally modulated transmitter technology allows the DEMT
series of transmitters to be used in many novel HFC applications and architectures.
The SEMT series transmitters are designed to be the most versatile model within the
2100 series family of 1550nm externally modulated transmitters. They can easily be
configured to meet most HFC network solutions requiring link lengths in the range of
50 to 70 kilometers with one EDFA as well as links utilizing multiple EDFA’s. In
addition, they will perform optimally in systems that require multiple optical splits and
fiber branching incorporating unequal fiber lengths.
The HEMT series transmitters are high performance, 1550nm externally modulated
transmitters optimized for single EDFA fiber links in the 70 to 90 kilometer range.
These transmitters take advantage of the 2100 series advanced fiber dispersion
compensation circuitry to provide exceptional CATV performance. The HEMT series
of transmitters provide a cost efficient, transport solution for medium to long
distances
The FEMT series transmitters are intended for use in FTTx architecture designs
requiring high quality transmission over varying transmission lengths and EDFA
output powers. These transmitters successfully support very high optical launch
powers while controlling the detrimental effects of Stimulated Brillouin Scattering
(SBS), group velocity dispersion (GVD), and self phase modulation (SPM) that
normally limit performance in conventional externally modulated products.
1 of 5
For more information on this and other products:
Contact EMCORE Sales at 626-293-3400, or visit www.emcore.com.
xEMT 2100 Series 1550nm Transmitter
PRELIMINARY DATA SHEET
|
MARCH 17, 2008
Optical / Electrical Characteristics
DEMT
PROPERTY
PERFORMANCE (note 1,2,3,4)
Specified Link Length
Channel Plan
Output Power
Noise Bandwidth
SBS Suppression
Carrier to Noise Ratio
Composite Second Order
Composite Triple Beat
Composite Triple Beat
UNITS
L (km)
Po (dBm)
BW (MHz)
(dBm)
CNR (dB)
CSO (dBc)
CTB (dBc)
CTB (dBc)
DEMT2101
40
NTSC 80-Ch
11.0
4
> 12.0
54.0
-65
-65
-64
MODELS
DEMT2102
40
PAL 60-Ch
11.0
5
>12.0
54.0
-65
-65
-64
DEMT2103
40
NTSC 110-ch
11.0
4
>12.0
51.0
-65
-65
-64
DEMT2104
40
PAL 89-Ch
11.0
5
>12.0
51.0
-65
-65
-64
COMMENTS
Min.
Min.
Min.
Max.
Max. @ +25°C
Max. @ 0
o
C to 50
o
C
SEMT
PROPERTY
PERFORMANCE (note 1,2,3,4)
Specified Link Length
Channel Plan
Output Power
Noise Bandwidth
SBS Suppression
Carrier to Noise Ratio
Composite Second Order
Composite Triple Beat
Composite Triple Beat
UNITS
L (km)
Po (dBm)
BW (MHz)
(dBm)
CNR (dB)
CSO (dBc)
CTB (dBc)
CTB (dBc)
PROPERTY
PERFORMANCE (note 1,2,3,4)
Specified Link Length
Channel Plan
Output Power
Noise Bandwidth
SBS Suppression
Carrier to Noise Ratio
Composite Second Order
Composite Triple Beat
Composite Triple Beat
SEMT2101
65
NTSC 80-Ch
6.0/ 6.0
4
16.0
53.0/ 53.0
-65/ -65
-65
-64
UNITS
L (km)
Po (dBm)
BW (MHz)
(dBm)
CNR (dB)
CSO (dBc)
CTB (dBc)
CTB (dBc)
MODELS
SEMT2102
65
PAL 60-Ch
6.0/ 6.0
5
16.0
53.0/ 53.0
-65/ -65
-65
-64
SEMT2103
65
NTSC 110-ch
6.0/ 6.0
4
16.0
50.0/ 50.0
-65/ -65
-65
-64
MODELS
HEMT2101
80
NTSC 80-Ch
6.0/ 6.0
4
18.0
52.0/ 52.0
-65/ -65
-65
-64
HEMT2102
80
PAL 60-Ch
6.0/ 6.0
5
18.0
52.0/ 52.0
-65/ -65
-65
-64
SEMT2104
65
PAL 89-Ch
6.0/ 6.0
5
16.0
50.0/ 50.0
-65/ -65
-65
-64
COMMENTS
COMMENTS
Min.
Note:Higher output
powers available
Min.
Min.
Max.
Max. @ +25°C
Max. @ 0
o
C to 50
o
C
HEMT
Min.
Min.
Min.
Max.
Max. @ +25°C
Max. @ 0
o
C to 50
o
C
COMMENTS
FEMT2104
20
PAL 89-Ch
6.0/ 6.0
5
20.0
45.0
-58
-58
Min.
Min.
Min.
Max.
Max.
FEMT
PROPERTY
PERFORMANCE (note 1,2,3,4)
Specified Link Length
Channel Plan
Output Power
Noise Bandwidth
SBS Suppression
Carrier to Noise Ratio
Composite Second Order
Composite Triple Beat
Units
L (km)
Po (dBm)
BW (MHz)
(dBm)
CNR (dB)
CSO (dBc)
CTB (dBc)
FEMT2101
20
NTSC 80-Ch
6.0/ 6.0
4
20.0
48.0
-58
-58
MODELS
FEMT2102
20
PAL 60-Ch
6.0/ 6.0
5
20.0
48.0
-58
-58
FEMT2103
20
NTSC 110-ch
6.0/ 6.0
4
20.0
45.0
-58
-58
2 of 5
2015 West Chestnut Street
Alhambra, California 91803-1542
Tel: 626-293-3400
Fax: 626-293-3428
www.emcore.com
EMCORE Broadband
Copyright 2008. EMCORE Corporation
xEMT 2100 Series 1550nm Transmitter
PRELIMINARY DATA SHEET
|
MARCH 17, 2008
Notes
:
1. Unless stated otherwise all specifications apply over full temperature range.
2. Unless stated otherwise specifications apply for nominal RF input level as defined in section 4, after 5 minute stabilization period.
3. Specifications separated by a slash are port1 / port 2.
4. Tested per Test Configuration Table
5. Noise figure for the EDFA = 4.5 ~ 5.5 dB
6. Corning SMF-28 single mode fiber
7. Receiver responsivity is 0.95 mA/mW, Equivalent noise current is 7 pA/(Hz)
1/2
General and Mechanical Specifications
PROPERTY
Wavelength
Channel Plan
Optical Connector
Remote interface
Operating Temperature
Storage Temperature
Power Consumption
Agency Listings
Transportation Vibration
Transportation Shock
Operating Humidity
Supply Range
Enclosure
PROPERTY
Input Power Range
REQUIREMENT
1555 +/-5 nm
SC/APC
RS-232
0°C to 50°C
-20°C to 70°C
50W max
FCC: Subpart B. Part 15, class “A”
CE: EN50083-2
GR-2853-CORE
GR-2853-CORE
20% to 85%
90 to 265 VAC, 50/60 Hz
36 – 60 VDC
19.0”W x 15.32”D x 1.72”H
REQUIREMENT
17 +/-1 dBmV/ch 80 NTSC channels
15 +/-1 dBmV/ch 110 NTSC channels
18 +/-1 dBmV/ch 60 PAL channels
16 +/-1 dBmV/ch 89 PAL channels
Input Power Range
19 +/-2 dBmV/ch 80 NTSC channels
17 +/-2 dBmV/ch 110 NTSC channels
20 +/-2 dBmV/ch 60 PAL channels
18 +/-2 dBmV/ch 89 PAL channels
Front Panel RF Gain / OMI
Adjustment Range
Frequency Range
Flatness
Input impedance
Input Return Loss
Front Panel RF Tap
Front Panel RF Tap Flatness
+2 / -4 dB from nominal setting
45MHz – 870MHz
+/- 0.50 dB
+/- 0.75 dB
75Ω
16dB min
-20 +/- 1 dB down from RF input
+/- 1 dB
45MHz - 870MHz
45MHz - 870MHz
45MHz - 550MHz
45MHz - 870MHz
COMMENTS
Manual mode
Manual mode
Manual mode
Manual mode
CW mode
CW mode
CW mode
CW mode
CATV Performance can vary slightly
COMMENTS
ITU-grid available
Custom channel plans available
Other styles available
Custom interfaces available
(VAC)
(VDC)
In Shipping package
In Shipping package
Non-condensing
Standard
Optional
3 of 5
2015 West Chestnut Street
Alhambra, California 91803-1542
Tel: 626-293-3400
Fax: 626-293-3428
www.emcore.com
EMCORE Broadband
Copyright 2008. EMCORE Corporation
xEMT 2100 Series 1550nm Transmitter
PRELIMINARY DATA SHEET
|
MARCH 17, 2008
Test/Link Configuration
PROPERTY
DEMT
SEMT
HEMT
FEMT
Notes:
EDFA
None
16 dBm
18 dBm
20 dBm
LINK
1
40 Km
65 Km
80 Km
20 Km
RECEIVED POWER
2
0.0 dBm at the receiver
0.0 dBm at the receiver
0.0 dBm at the receiver
-5.5 dBm at the receiver
1.
2.
Corning SMF-28 single mode fiber (0.2dB/km loss assumed)
Receiver responsivity is 0.95 mA/mW, Equivalent noise current is 7 pA/(Hz)
1/2
Outline Drawing
4 of 5
2015 West Chestnut Street
Alhambra, California 91803-1542
Tel: 626-293-3400
Fax: 626-293-3428
www.emcore.com
EMCORE Broadband
Copyright 2008. EMCORE Corporation
xEMT 2100 Series 1550nm Transmitter
PRELIMINARY DATA SHEET
|
MARCH 17, 2008
Laser Safety Information
CAUTION – use of controls or adjustments or performance of procedures other than those specified herein may result in
hazardous laser exposure.
CAUTION - invisible laser energy is present at the output(s) of the optical connectors. AVOID DIRECT EXPOSURE TO
THE BEAM. Laser output is invisible and eye damage may result.
CAUTION - do not attempt to open any optical connections with the laser enabled. Laser power up to 17.5 mW at
approximately 1550 nm could be accessible with optical connectors open.
One or both of the following precautionary labels can be found on the fiber optic connector bulkhead assembly located at
the rear of the transmitter.
DANGER
CAUTION
INVISIBLE LASER RADIATION WHEN OPEN
AVOID DIRECT EXPOSURE TO BEAM
DISCONNECTED OPTICAL CONNECTOR MAY EMIT
INVISIBLE OPTICAL ENERGY
DO NOT VIEW WITH OPTICAL INSTRUMENTS
Ordering Information
EMT210
-
-
-
Model Type
D
- Short Link
S
- Medium Link
H
- Long Link
F
- FTTx
1
– NTSC 80-Ch
2
– PAL 60-Ch
3
– NTSC 110-ch
4
– PAL 89-Ch
Channel
Plan
Wavelength
blank
– 1555+/-5 nm
XX
– ITU Channel
Connectors Option
SC
FC
EC
TC
GC
- SC/APC
- FC/APC
- E2000/APC Diamond
- SC/UPC
- FC/UPC
1
– VAC
2
– VDC
Voltage
Supply
Example:
SEMT2101-35-SC-1:
Medium Link transmitter with 80 NTSC channel loading, ITU 35, SC/APC optical
connector, and AC power
5 of 5
2015 West Chestnut Street
Alhambra, California 91803-1542
Tel: 626-293-3400
Fax: 626-293-3428
www.emcore.com
EMCORE Broadband
Copyright 2008. EMCORE Corporation
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