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The SANLAND 5 MHz–6 GHz RF over Fiber module pair provides transparent transmission of broadband RF signals over SM28 single-mode fiber. The transmitter converts the incoming RF signal into an optical signal using a high-linearity DFB laser, while the receiver converts the optical signal back into RF through a high-linearity photodiode and low-noise amplifier. The original RF modulation format is preserved throughout the link.

With compact 64 × 39 × 12 mm dimensions, 5 V operation, 50 Ω SMA interfaces and 1310 nm or 1550 nm wavelength options, the modules are designed for integration into communication, broadcast, antenna distribution and test systems. TX, RX and matched pair configurations are available for flexible system integration.

 5 MHz–6 GHz RF Over Fiber Link Architecture

TX Module

Mechanical dimension drawing of the SANLAND 5 MHz to 6 GHz RF over fiber transmitter module, showing top and side views, SMA RF input, optical output, and 5 V power pins.

RX Module

 Frequently Asked Questions

Can the RF over Fiber link transmit digitally modulated RF signals?

The module transparently transports RF waveforms and is suitable for both analog signals and digitally modulated RF carriers within the specified frequency and input-power range.

Is one module enough to form an RF over Fiber link?

No. A complete unidirectional link requires one transmitter and one receiver operating at the same optical wavelength.

Why use RF over Fiber instead of coaxial cable for remote RF transmission?

RF over Fiber is well suited to remote and distributed RF links where long cable runs, signal loss and electromagnetic interference are concerns. This 5 MHz–6 GHz link transports the original RF signal over single-mode fiber while maintaining wide bandwidth and signal integrity.

What type of fiber is required?

The standard configuration uses SM28 single-mode fiber with FC/APC optical connections.

What is the maximum transmission distance?

The supported distance depends on transmitter optical power, fiber loss, connector loss and the required RF performance. Customers should provide the fiber distance and link requirements for a link-budget evaluation.

 RF Performance

Parameter	Value
RF Frequency Range	5 MHz–6 GHz
RF Input Power	-35 to -15 dBm
RF Output Power	-15 to +5 dBm
Input P1dB	-10 dBm typical
IIP3	33 dBm typical
SFDR	90–104 dB·Hz2/3
Noise Figure	16–30 dB
Gain Flatness	±3 dB max.
Input/Output VSWR	1.9:1 typical, 2:1 max.
RF Impedance	50 Ω
RF Connector	SMA

 Optical Performance

Parameter	Value
Optical Wavelength	1310 ±20 nm or 1550 ±20 nm
TX Optical Output Power	3 mW typical
Optical Input Power	-15 to +2 dBm
Receiver Sensitivity	-20 dBm
Fiber Type	SM28 Single-Mode Fiber
Optical Connector	FC/APC
WDM Configuration	Optional

 Electrical, Mechanical and Environmental

Parameter	Value
Supply Voltage	4.8–5.2 V DC, 5 V typical
Supply Current	160 mA typical
Gain Variation over Temperature*	±2 dB
Operating Temperature	-20°C to +50°C
Storage Temperature	-45°C to +85°C
Module Dimensions	Approx. 64 × 39 × 12 mm

*Measured over the operating temperature range of −10°C to +70°C.

TX Module

Mechanical dimension drawing of the SANLAND 5 MHz to 6 GHz RF over fiber transmitter module, showing top and side views, SMA RF input, optical output, and 5 V power pins.

RX Module