FTTH Optical Cable TV Externally Modulated Transmitter with AGC
Description
ST15Exx is a high performance external modulation 1550nm Optic transmitter with a high quality LiNbO3 external modulator and a high power, narrow bandwidth, low noise DFB laser. It adopts a series of unique innovation technique to reach the excellent system control. With 47~862Mhz bandwidth, CNR ≥ 53dB, CTB ≤ -65dB, CSO ≤ - 65dB, SBS: 13, 16, 18adjustable, it can make CATV network transmit video, audio and data with high performance. The machine can is equipped with perfect RS232 communication interface, SNMP network management and 1+1 backup power supply.
ST15Exx Optic transmitter features Two-way optic output, narrow spectral line, and can be used for long distance transmission. With ITU-T wavelength, it can implement the access of a broadband PON network or FTTH by using the WDM Technologies.
ST15ExxC: Standard type, dual fiber output CATV work wavelength, 1MHz laser line width, SBS 13, 16,18dBm adjustable, SNMP network management optional.
ST15ExxU: Standard type, dual fiber output ITU wavelength adjustable, 1MHz laser line width, SBS 13, 16,18dBm adjustable, SNMP network management optional.
Main Features
Externally modulated technology, no laser chip, low dispersion distortion, high extinction ratio.
Narrow bandwidth (Typ=1Mhz), Lower noise, DFB continuous wave laser.
The working bandwidth is up to 47~1080Mhz
Unique innovation technology, provide excellent CNR, CTB, CSO&SBS.
ITU standard wavelength adjustable, the user can adjust and set the laser wavelength on the front-panel with ±0.05nm stepping in the range of ±200GHz (±1.6nm), used in the network upgrading and expansion of WDM system.
AGC/MGC Mode is optional at spot, OMI can be optimized at spot.
Perfect RS232 communications interface.
SNMP network management optional.
1+1 backup power supply optional.
Temperature in the housing auto-control.
Excellent P/P ratio
Parameter
| erformance |
Index |
Supplement |
| Optic feature |
Operating wavelength |
(nm) |
1540~1563 |
|
| ITU-TG.692 |
|
| Wavelength adjustable range |
(nm) |
±1.6 (±200GHz) |
|
| Wavelength adjustable mode |
|
±0.05nm stepping |
|
| Linewidth |
(MHz) |
≤1 |
FWHM(Δλ) |
| Side mode suppression ratio |
(dB) |
≥45 |
SMSR |
| Equivalent noise intensity |
(dB/Hz) |
≤-160 |
RIN (20~1000MHz) |
| Output power |
(dBm) |
1×5 |
Optional 1×3, 1×6, 1×7 |
| Return loss |
(dB) |
≥55 |
|
| optical fiber connector |
|
SC/APC |
Optional FC/APC,LC/APC |
| RF feature |
Work bandwidth |
(MHz) |
47-862 |
47~1000, 47~1080 optional |
| Input level |
(dBmV) |
18~28 |
AGC |
| Flatness |
(dB) |
≤±0.75 |
45~862MHz |
| |
|
≤±1.5 |
862~1000MHz (optional) |
| Return loss |
(dB) |
>16 |
|
| Input impedance |
(Ω) |
75 |
|
| RF port |
|
F-Female |
|
| Link feature |
Transmit channel |
|
PAL-D/60CH |
PAL-D/99CH |
|
| CNR1 |
(dB) |
≥52 |
≥50.5 |
Back to back |
| CNR2 |
(dB) |
≥50.5 |
≥49 |
50Km optical fiber, 0dBm receive |
| CTB |
(dB) |
≤-65 |
≤-65 |
|
| CSO |
(dB) |
≤-65 |
≤-65 |
|
| SBS restrain |
(dBm) |
13 |
|
| General feature |
SNMP network management interface |
|
RJ45 |
|
| Communication interface |
|
RS232 |
|
| Power supply |
(VAC) |
90~265 |
50/60Hz |
| (VDC) |
-48 |
30~72 |
| Power Consume |
(W) |
≤50 |
Single power works |
| Operating temp. |
(°C) |
0~50 |
Machine temp. control automatically |
| Storage temp. |
(°C) |
-40~85 |
|
| Operating relative humidity |
(%) |
5~95 |
|
| Size |
(") |
19×14.5×1.75 (W)x(D)x(H) |
|
PARAMETERS FOR 2 OUTPORT
| Performance |
Index |
| Wavelength ADJ. Range |
(nm) |
±1.6 (±200GHz) |
| Wavelength ADJ. Mode |
|
±0.05nm stepping |
| Side mode suppression ratio |
(dB) |
≥45 |
| Equivalent noise intensity |
(dB/Hz) |
≤-160 |
| Input level |
(dBmV) |
18~28 |
| Input impedance |
(Ω) |
75 |
| RF connector |
|
F-Female |
| SNMP NM interface |
|
RJ45 |
| Communication interface |
|
RS232 |
| Linewidth |
(MHz) |
Typ.=0.65 |
| Output power |
(dBm) |
2*3,2*5, 2*6, 2*7, 2*9, 2*10, 2*11 optional |
| Return loss |
(dB) |
≥50 |
| Link feature |
Transmit channel PAL-D/60CH |
CNR1 |
(dB) |
≥53 |
| CNR2 |
(dB) |
≥51.5 |
| CTB |
(dB) |
≤-65 |
| CSO |
(dB) |
≤-65 |
| Transmit channel PAL-D/99CH |
CNR1 |
(dB) |
≥51.5 |
| CNR2 |
(dB) |
≥49.5 |
| CTB |
(dB) |
≤-65 |
| CSO |
(dB) |
≤-65 |
| SBS restrain adjustable |
(dBm) |
13~18 |
| Optical fiber connector |
|
SC/APC |
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