Analog RFoF optical Transmitter is used to convert RF signals to optical signals that can be sent and carried over long distances of fiber optic cable.
The Optical Receiver converts them back to an RF signal. The two units are connected through 1 single mode fiber up to 40Km.
RF over Fiber modules (RFoF) are commonly used in L-band, S-band satellite, radio telescopes, RF antennas distribution, broadcasting audio, and video, timing synchronization and GPS applications and other telecommunications.
It's very easy and cost effective to extend a signal from any antenna, Modulator or RF instrument, point to point or multipoint to multipoint using fiber optic splitters.
Applications
IMPORTANT NOTE*** (it is very important to interface our unit with SC/APC - Angle Polished Connector to avoid any light reflections.
If your fiber is terminated with the SC, ST, FC /PC flat connector, you need to use an optical jumper from PC type to SC/APC for proper conversion.
F-RFoF-6GHZ-TX RFoF -RF over fiber 6Ghz optical Transmitter
F-RFoF-6GHZ-RX RFoF -RF over fiber 6Ghz optical Receiver
IMPORTANT NOTE*** (It is very important to interface our unit with FC/APC - Angle Polished Connector to avoid any light reflections.
If your fiber is terminated with the SC, ST, FC /PC flat connector, you need to use an optical jumper from PC type to FC/APC for proper conversion.
Parameter |
Symbol |
Condition |
Min. |
Max. |
Unit |
Operating Case Temperature |
Topr |
|
-20 |
+70 |
°C |
Storage Temperature |
Tstg |
|
-40 |
+85 |
°C |
DC Operating Voltage |
Vd |
+5V Pin |
+4.7 |
+5.5 |
V |
RF Input Power |
Prf |
Without LNA |
-- |
20 |
dBm |
With LNA |
-- |
15 |
|||
Output Optical Power |
Ps |
CW |
-- |
12 |
mW |
Relative Humidity |
Hr |
|
-- |
95 |
% |
Pressure |
Pr |
|
86 |
106 |
kPa |
ESD |
|
Human body model |
|
Class 1A |
|
Note: Operation beyond these absolute maximum conditions may degrade device performance, lead to device failure, shorter lifetime, and will invalidate the device warranty. |
Typical Specification
Parameter |
Test Condition |
MIN. |
TYP. |
MAX. |
Unit |
|
Frequency Range |
TSC |
0.01 ~ 3 |
GHz |
|||
TCC |
0.01 ~ 6 |
|||||
Optical Wavelength |
CWDM |
optional |
nm |
|||
Gain (2) |
TSC |
Tx with LNA Rx with LNA |
6 |
14 |
-- |
dB |
Tx with LNA Rx without LNA |
-11 |
-3 |
-- |
|||
Tx without LNA Rx with LNA |
-11 |
-3 |
-- |
|||
Tx without LNA Rx without LNA |
-28 |
-24 |
-- |
|||
TCC |
Tx without LNA Rx with LNA |
-11 |
-3 |
-- |
||
Tx without LNA Rx without LNA |
-30 |
-26 |
-- |
|||
Ripple of Passband |
TSC |
100M~3GHz,1270nm~1370nm |
-- |
±1.5 |
±2.2 |
dB |
100M~3GHz,1530nm and 1550nm |
-- |
±2.5 |
±3.0 |
|||
TCC |
100M~6GHz,1270nm~1370nm |
-- |
±1.5 |
±2.2 |
||
100M~6GHz,1530nm and 1550nm |
-- |
±2.5 |
±3.0 |
|||
Output Optical Power |
+25°C |
-- |
9 |
-- |
dBm |
RF Return loss (50 Ω) |
TSC |
10MHz ~ 3GHz, RF Input |
-- |
-10 |
-5 |
dB |
TCC |
10MHz ~ 6GHz, RF Input |
-- |
-10 |
-5 |
||
Input P-1dB?2? |
TSC |
with LNA, 1.5GHz |
-- |
0 |
-- |
dBm |
without LNA, 1.5GHz |
-- |
17 |
-- |
|||
TCC |
without LNA, 3GHz |
|
17 |
|
||
SFDR(2) |
TSC |
1.5GHz |
102 |
115 |
-- |
dB·Hz2/3 |
TCC |
3GHz |
102 |
113 |
-- |
||
Input IP3(2) |
TSC |
with LNA, 1.5GHz |
4 |
9 |
-- |
dBm |
without LNA, 1.5GHz |
25 |
33 |
-- |
|||
TCC |
without LNA, 3GHz |
21 |
33 |
-- |
||
Noise Figure (2) |
TSC |
with LNA, 1.5GHz 1270nm ~1370nm |
-- |
18 |
25 |
dB |
with LNA, 1.5GHz 1530nm and 1550nm |
-- |
20 |
26 |
|||
without LNA, 1.5GHz 1270nm~1370nm |
-- |
32 |
40 |
|||
without LNA, 1.5GHz 1530nm and 1550nm |
-- |
35 |
42 |
|||
TCC |
without LNA, 3GHz 1270nm ~1370nm |
-- |
32 |
42 |
||
without LNA, 3GHz 1530nm and 1550nm |
-- |
38 |
45 |
|||
Operating Current |
with LNA, TSC |
-- |
145 |
200 |
mA |
|
without LNA, TSC/TCC |
-- |
55 |
100 |
|||
Operating Voltage |
+5V pin |
+4.8 |
+5 |
+5.2 |
VDC |
|
Bias-T Voltage |
Though the RF SMA connector |
+4.8 |
+5 |
+5.2 |
VDC |
|
Bias-T Current Supply |
Though the RF SMA connector |
- |
-- |
200 |
mA |
|
Note: (1) The lower start frequency such as 9kHz can be customized (without LNA only); (2) Test with optical receiver (see the picture below) and the fiber is 1-meter SMF-28 fiber. |
Type |
Connector |
RF |
SMA (50Ω), Female |
Optical |
FC/APC (1) |
Optical Fiber Type |
SMF-28(Standard) |
Power |
EMI Low Pass Filter, Feed Through Capacitor |
Note (1): Other type optical connector available upon request.
PIN |
Name |
Direction |
Note |
1 |
+5V |
I |
+5V DC Power |
2 |
GND |
I |
RF and DC Ground |
3 |
OP |
O |
Optical Power Monitor, Power Level is +2.2V±0.4V Indicate Transmit Optical Power Normal, Otherwise Indicate Transmit Optical Power Abnormal. |
![]() |
Optical Transmitter
OM |
- |
TxC |
xxx |
N |
x |
- |
O |
S |
x |
x |
OM: Optical Module |
|
Frequency Range(1): TSC: 10M~3GHz TCC:10M~6GHz |
Wavelength (2) :127:1270nm 129:1290nm … 137:1370nm 153:1530nm 155:1550nm |
|
Optical Connector and Fiber Type (3): F FC/APC SM L: LC/APC SM |
|
|
Operating Temperature(4) S: -20 to 70°C |
Bias-T: 1:without T:with |
LNA(5): 0: without 1: with |
Note: The lower start frequency such as 9kHz is available upon request (without LNA only) ;(2) Other wavelengths is available upon request; (3) Other types of optical fiber connector type is available upon request; (4) Other temperature range is available upon request, (5) LNA only supports TSC frequency band for the time being.
Parameter |
Symbol |
Condition |
Min. |
Max. |
Unit |
Operating Case Temperature |
Topr |
|
-20 |
+70 |
°C |
Storage Temperature |
Tstg |
|
-40 |
+85 |
°C |
DC Operating Voltage |
Vd |
+5V Pin |
+4.7 |
+5.5 |
V |
Saturation Input Optical Power |
Ps |
CW |
-- |
10 |
mW |
Relative Humidity |
Hr |
|
-- |
95 |
% |
Pressure |
Pr |
|
86 |
106 |
kPa |
ESD |
|
Human body model |
|
Class 1A |
|
Note?Operation beyond these absolute maximum conditions may degrade device performance, lead to device failure, shorter lifetime, and will invalidate the device warranty. |
Parameter |
Test Condition |
MIN. |
TYP. |
MAX. |
Unit |
|
Frequency Range |
RSC |
0.01 ~ 3 |
GHz |
|||
RCC |
0.01 ~ 6 |
|||||
RXC |
0.01 ~ 12 |
|||||
Optical Wavelength |
|
800~1650 |
nm |
|||
Gain (1) |
RSC |
Tx without amplifier Rx with amplifier |
-11 |
-3 |
-- |
dB |
Tx without amplifier Rx without amplifier |
-28 |
-24 |
-- |
|||
RCC |
Tx without amplifier Rx with amplifier |
-11 |
-3 |
-- |
||
Tx without amplifier Rx without amplifier |
-30 |
-26 |
-- |
|||
RXC |
Tx without amplifier Rx without amplifier |
-30 |
-26 |
-- |
||
Ripple of Passband (1)(2) |
RSC |
100MHz ~ 3GHz |
-- |
±1.2 |
±2 |
dB |
RCC |
100MHz ~ 6GHz |
-- |
±1.5 |
±2.2 |
||
RXC |
100MHz ~ 12GHz |
-- |
±2.0 |
±2.5 |
||
Input Optical Power |
+25? |
-- |
-- |
10 |
dBm |
|
Back Reflection |
|
-- |
35 |
-- |
dB |
|
PD Responsivity |
1310nm |
0.7 |
0.8 |
-- |
mA/mW |
|
1550nm |
0.7 |
0.85 |
-- |
|||
RF Return loss (50 Ω) |
RSC |
100MHz ~ 3GHz |
-- |
-12 |
-8 |
dB |
RCC |
100MHz ~ 6GHz |
-- |
-10 |
-7 |
||
RXC |
100MHz ~ 12GHz |
-- |
-10 |
-5 |
||
Operating Current |
with amplifier, RSC/RCC |
-- |
90 |
120 |
mA |
|
without amplifier, RSC/RCC/RXC |
-- |
7 |
10 |
|||
Operating Voltage |
+5V pin |
+4.8 |
+5 |
+5.2 |
VDC |
|
Note: (1) RSC and RCC are test with Mini optical Tx (see the below picture), RXC is test with optical Tx and the fiber is 1-meter SMF-28 fiber. (2) The ripple contains Tx and Rx. |
Type |
Connector |
||
RF |
SMA (50Ω), Female |
||
Optical |
FC/APC (1) |
||
Optical Fiber Type |
SMF-28(Standard) |
||
Power |
EMI Low Pass Filter, Feed Through Capacitor |
||
Note (1): Other type optical connector available upon request. | |||
PIN Function | |||
________________________ |
|
________________________ |
PIN |
Name |
Direction |
Note |
1 |
+5V |
I |
+5V DC Power |
2 |
GND |
I |
GND |
3 |
OP |
O |
Received Optical Power Monitor, The Voltage of OP See Below Explanation |
The OP voltage (Vop, unit: V) VS received optical power ( Pop, unit: mW) follow the formula:
Vop≈ D*Pop
The D factor defined as detection factor in V/mW unit. The typical range of D is from 0.25 V/mW to 0.5 V/mW. For example, D=0.375 V/mW, the OP voltage (Vop) VS received optical power (Pop) as shown in the table below:
Vop (V) |
Pop (mW) |
3.75 |
10 |
3.375 |
9 |
3 |
8 |
2.625 |
7 |
2.25 |
6 |
1.875 |
5 |
… |
… |
0 |
0 |
The user can input the known optical power Pop and detect the Vop voltage, and then calculate the approximate value of the D factor of an optical receiver by the formula Vop≈ D*Pop. In this case, the obtained D factor and Vop can be used to estimate the optical power received by the optical receiver in practical applications. |
Analog RF 10MHz to 18GHz Ku-Band fiber optic mini Transmitter and Receiver set F-RFoF-18GHZ-TxRx
4GHz Mini Analog RF over fiber transport equipment. Transmitter has SMA 50ohm electrical interface and accepts Analog RF signal up to 4000Mhz, units come standard with optical FC/APC output. The receiver accepts an optical signal from it's FC/APC port and converts it back to the electrical RF. These units are ideal for transporting high frequency RF over fiber where copper can not complete the application due to its inherent distance limitations.