1550nm series
Direct Modulated 1550nm Optical Transmitter
Product description
Direct Modulated CATV 1550nm Optical Transmitter Series products adopt high linearity and low chirp DFB laser, built-in pre-distortion compensation and AGC, APC, ATC closed loop control, which improves the system index obviously.
1. HT1500A(with AGC)
Direct Modulated AGC 1550nm optical transmitter
HT1500AC (CATV wavelength)
HT1500AU (ITU standard wavelength)
OMI control, AGC & MGC.
Dual module RF driver
DFB laser
2. HT1500B(without AGC)
Direct modulated 1550nm optical transmitter
HT1500BC (CATV wavelength)
HT1500BU (ITU standard wavelength)
SBS restrain>=17dBm CSO<=-57dB CNR>=50dB
Dual module RF driver, high efficient laser pre-distortion adjustment.
Perfect APC, ATC closed loop control.
Built-in dual back-up power supply, switch automatically.
Casing temperature auto-control
3. HT1500W(Narrow-band Mulitiplexing)
Direct Modulated Narrow-band Multiplexing 1550nm Optical Transmitter
HT1500WC× × (CATV wavelength)
HT1500WU× × (ITU standard wavelength adjustable)
Perfect laser APC, ATC closed-loop control.
1+1 backup power supply optional, switch automatically.
4. HT1500E(Build-in EDFA)
Direct Modulated High power 1550nm Optical Transmitter
HT1500EC (CATV wavelength)
HT1500EU (ITU standard wavelength)
Fiber to the home
Application: CATV
Internal modulated optical transmitter
ITU standard wavelength optional
Internal Modulated Narrow-band Multiplexing
Product features
1. High performance CATV equipment
2. Direct Modulated 1550nm Optical Transmitter
3. Various types widely used
4. Low chirp, high linearity DFB laser, chirp compensation.
5. Perfect APC, ATC closed loop control
4. Built-in dual power supply back-up, switch automatically.
5. Casing temperature auto-control, ensure the long life of the laser.
| 1550nm Direct Modulated CATV Optical Transmitter |
| HT1500 Series |
|
HT1500A |
HT1500B |
HT1500W |
HT1500E |
| Similarity |
|
| Side mode suppression ratio |
(dB) |
≥ 45(SMSR) |
| Linewidth |
(MHz) |
≤ 1(FWHM(Δ λ )) |
| Wavelength |
(nm) |
1548~1563 (CATV wavelength) |
| 1530~1563 (ITU standard wavelength) |
| Equivalent noise intensity |
(dB/Hz) |
≤ -160(RIN 20~1000MHz) |
| optical fiber connector |
|
FC/APC, SC/APC |
| Work bandwidth |
(MHz) |
45-862 |
| Flatness |
(dB) |
≤ ± 0.75 |
| Input impedance |
(Ω ) |
75(RF/INPUT) |
| Return loss |
(dB) |
> 16 |
| Difference |
|
| Return loss |
(dB) |
≥ 55 |
≥ 60 |
| Input level |
(dBmV) |
20± 2(MGC) |
20± 2 |
28~40 |
20± 2(MGC) |
| Link feature |
Transmit channel(PAL-D/60CH) |
CNR |
(dB) |
≥ 52 |
|
≥ 52 |
≥ 49 |
| CTB |
(dB) |
≤ -65 |
|
≤ -65 |
≤ -63 |
| CSO |
(dB) |
≤ -62 |
|
≤ -62 |
≤ -57 |
| Transmit channel(PAL-D/59CH) |
CNR |
(dB) |
|
≥ 50 |
|
|
| CTB |
(dB) |
|
≤ -63 |
|
|
| CSO |
(dB) |
|
≤ -57 |
|
|
| NTSC/80CH |
CNR |
(dB) |
-1dBm receive |
|
-1dBm receive |
-1dBm receive |
| NTSC/77CH |
CNR |
(dB) |
|
-1dBm receive |
|
|
| SBS restrain |
(dBm) |
≥ 17 |
≥ 17 |
≥ 18 |
≥ 17 |
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