Teko Telecom Fibre Optic Transmitter/Receiver Modules (TTRC and TTRU) are the Master Unit interface towards Remote Units. They perform the RF-to-Optical/Optical-to-RF conversion required by the Radio over Fibre technology (RoF) applied in our Optical Systems.
Fibre Optic Transmitter/Receiver Modules are connected to Remote Units via single mode optical fibre, with Uplink and Downlink signals transmitted over the same fibre (Wavelength Division Multiplexing -WDM technology).
Different configurations are available: a single Fiber Optic Transmitter/Receiver Module can be equipped with
− 1TX (Optical Transmitter) and 1RX (Optical Receiver): 10dB optical link budget, up to 20km (12.4 miles) distance;
− 1TX split by 2 and 2 combined RX, 10dB optical link budget, up to 20km (12.4 miles) distance;
− 1TX split by 4 and 4 combined RX, 6dB optical link budget, up to 12km (7.4 miles) distance.
The Fiber Optic Transmitter/Receiver in 1:1 configuration is able to drive up to 5 cascaded Remote Units with different wavelengths in Up-link. The Fiber Optic Transmitter/Receiver Module in 1:4 configuration can manage up to 4 Remote Units, deployed with a point to point connection (star configuration).
The Fibre Optic Transmitter provides the RF to optical conversion (Downlink side): the module RF section covers the 380 to 2200MHz band (TTRC models) or the 380 to 2700MHz band (TTRU models).
Fibre Optic Receivers convert Uplink optical signals from Remote Units into RF. They operate in the third window (Optical wavelength 1490 ÷ 1570nm).
An auto-levelling functionality (AGC) compensates for optical link loss to guarantee constant gain over different link budgets, simplifying system installation, making commissioning quick and easy and avoiding field adjustments.
Main Features
- Wideband (380 to 2700 MHz);
- AGC to compensate optical link loss;
- Powerful (up to 20 Km / 12.4 miles distance, but the configuration 1:4).