Laser Transmitter with Erbium Doped Fibre Amplifier

About the Product

The optical transmitter model LT1550 employs a high performance thermally stabilised, DFB, low-chirp, isolated laser to transmit CATV signals.  Operating on a specific optical wavelength in the ITU-DWDM grid, the unit suits single mode optical fibre networks with or without dense wavelength division multiplexing (DWDM).

The unit can optionally be equipped with an integrated erbium doped fibre amplifier (EDFA) for fibre to the home (FTTH) applications.

Designed for high channel loading and superior performance, this transmitter can achieve distances of up to 10 km on standard fibres and up to 30 km on 1550 nm dispersion shifted fibres.

LT1550 optical transmitters incorporate a comprehensive alarm and status monitoring system of all laser operating parameters such as DC Laser Bias Current, Cooler Current and Optical Output Power.

The data is available simultaneously on a front panel LCD display, on a USB connector, and optionally via a HTTP/SNMP network module.

Features

• Analogue InGaAsP DFB low-chirp laser with optical isolator and thermoelectric cooler.
• Handles legacy analogue cable television as well as digital DVB-T or DVB-C formats.
• 45 MHz to 1000 MHz forward path RF amplifier with automatic gain control (AGC) for a constant optical modulation index (OMI).
• Automatic Peltier thermo-cooler control and automatic laser power control for constant laser temperature and optical output.
• Option for integrated Erbium Doped Fibre Amplifier (EDFA) to achieve the very high optical power levels as required for FTTH systems.
• Self-contained 19” subrack 1 RU with integrated universal mains power supply.
• Backlit LCD display provides status monitoring and control.
• Front panel mounted USB craft port with optional Ethernet port on the rear panel for SNMP/HTTP network management.