FPMR3 1310 nm 3 GHz 4 mW Coaxial Analogue FP Laser
- Technology
- Fibre lasers
- Partner
- AGx Technologies
The FPMR3 coaxial analogue FP laser is a specialised laser diode module designed for broadband RF-over-fibre links. It emits at 1310 nm with an optical output of up to ~4 mW. The device supports analogue intensity modulation frequencies up to 3 GHz, making it suitable for high-frequency radio signals.
An integrated Faraday optical isolator minimises feedback, ensuring stable laser operation. The module includes a fibre pigtail and can be provided with standard fibre connectors. Applications include CATV return-path transmitters and distributed antenna systems.
Range features
A high level overview of what this range offers
- 1310 nm wavelength – Fits standard single-mode fibre transmission with low dispersion, suitable for telecom and CATV bands
- Up to 3 GHz analog bandwidth – Supports the transmission of high-frequency RF signals without significant distortion
- ~4 mW optical output – Provides optical power for short to mid-range fibre links, ensuring good signal-to-noise ratio
- Integrated Faraday isolator – Minimises back-reflections into the laser, improving signal stability
- Coaxial fibre-coupled package – Compact design saves space and maintains 50 Ω RF input matching
- Fabry-Perot laser diode – Cost-effective for many RF applications
- Built-in monitor photodiode – Allows real-time monitoring for feedback control
- Custom configuration options – Available with choice of connectors, pigtail lengths, or isolator stages
What’s in this range?
All the variants in the range and a comparison of what they offer
Parameter | Specification |
Laser type | Fabry-Perot (FP) semiconductor laser (coaxial package) |
Center wavelength | 1310 nm (nominal) |
Optical output power | Up to 4 mW (fiber-coupled, typical) |
Analogue modulation bandwidth | 0 to 3 GHz (–3 dB roll-off) |
Input impedance | 50 Ω (RF coaxial input) |
Optical isolator | Yes – integrated single-stage isolator |
Monitor photodiode | Yes – internal PD for output monitoring |
Fibre pigtail | Single-mode fibre (SMF-28 or equivalent), ~1 m length, connector optional |
Operating temperature | 0 °C to +70 °C (typical uncooled operation) |
Applications | CATV return path transmitters; RF-over-fibre links (up to 3 GHz); wireless DAS |
FAQs
for FPMR3 1310 nm 3 GHz 4 mW Coaxial Analogue FP Laser
A 3 GHz modulation bandwidth allows the FPMR3 laser to modulate and carry signals with frequencies up to 3 GHz, ensuring complex or high-speed analogue waveforms are transmitted with minimal distortion.
The optical isolator protects the laser diode from reflections, minimising interference and signal distortion. While it can be used without one, it is recommended to use an isolator to ensure consistent performance.
Yes, the FPMR3 includes an internal monitor photodiode that allows real-time monitoring of the laser’s output power, helping to stabilise output over temperature and lifetime.
