Description
1550nm optical transmitters designed according to the telecommunication stand,converting the CATV rf amplitude signal into 1550nm optical signalthen through single mode optical fiber to the optical node in HFC network,maily used for TV signal,digital TV signal.telephone voice signal and data signal long distance transmission.
1550nm optical transmitter is equipped with reliable stable optical output power circuit and pump laser thermoelectric refrigerator temperature control circuit to ensuer the best performance of the equipment and expand the laser span.With professional heat dissipation structure design,intelligent temperature control fan and low power consumption make it to be the ideal choice for building the large and medium-sized optical transmission network.
Features
– 1U rack, stainless steel housing with excellent heat dissipation and appearance.
– The bandwidth 47-862MHz.
– Adopt world top brand laser with wide bandwidth and high output power.
– Built in microcomputer automatic monitoring circuit, realtime monitoring the optical output power and laser working state. To ensure the stable output power and expand the laser lifespan.
– Advanced multi-frequency RF pre-distortion technology, RF GaAs devices and complete SMT structure effectively improve the C/N, CTB and CSO parameters in the CATV system.
– RF driving circuit adopts the RF power digital automatic processing technology according to RF input signal level and the input channels number, automatically handles the driveing level, in order to keep the C / CTB, C / CSO and C / N parameters always in the best status.
– Laserautomatictemperature stabilization circuit (ATC) and optical power output stabilization circuit (APC),
ensurethe laserworking withoptimal performance.
– RF output power detector and the RF relay shutdown functioneffectively preventthedamageof the laser when thesignal is too high. AGC / MGCworking mode for optional.
– The front panel has working status indicators and the back panel has RF test port.
– The working parameters and fault information can be displayed through centralized monitoring unit on the LCD screen, also can monitor through RJ45 network interface.
Specifications
| Item | unit | Technical Data |
| Output power | mw | 3-10dBm |
| Wavelength | nm | 1550±10 |
| Laser | DFB laser | |
| Light Modulation | Direct light intensity modulation | |
| Optical connector | SC/APC or SC/UPC | |
| bandwidth | MHz | 47 ~ 862MHz |
| RF Input Level | dBµV | 80dBµV ±5 |
| Flatness | dB | ±0.75 |
| Monitoring port level | dBµV | -10 (Input) |
| Inputs isolation | dB | ≥50 (Local port to broadcast port) |
| AGC Accuracy | dB | 0.25 |
| MGC adjustment range | dB | 0 ~ 15 |
| RF input impedance | Ω | 75 |
| Input Return Loss | dB | ≥16 |
| C/CTB | dB | ≥65 |
| C/CSO | dB | ≥60 |
| CNR(C/N) | dB | ≥51 |
Note: The above technical parameters are in accordance with the technical requirements and methods of measurementGY / T 143-2000 predetermined measured.
FAQ
Q: What is the primary function of the 1550nm Optical Transmitter?
A: It converts CATV RF amplitude signals into 1550nm optical signals for long-distance transmission of TV, digital TV, voice, and data across single-mode optical fiber in HFC networks.
Q: What output power options are available for this transmitter?
A: Options include 2mW, 5mW, 8mW, and 10mW output power options (technical range of 3–10 dBm).
Q: What optical connector types does it support?
A: The transmitter supports both SC/APC and SC/UPC optical connectors.
Q: What features ensure laser stability and protection?
A: It features a top-brand DFB laser equipped with Automatic Temperature Control (ATC) and Automatic Power Control (APC) circuits, microcomputer monitoring, an intelligent cooling fan, and an RF relay shutdown function that protects the laser if signal levels become too high.
Q: How can working parameters and status be monitored?
A: Parameters and fault information are displayed on the front panel LCD screen and status LEDs, or remotely monitored using the rear RJ45 network interface.
Q: How do I request pricing or product support?
A: Select your preferred output power on the product page and click “Add to Quote” or “Request a Demo”. You can also contact FirstFiber Technologies directly at sales@FirstFiberTech.com or +86 021 51347338.
