Techwin CKWIND Series 1550nm High Power Single Frequency Fiber Laser Module is an OEM modular narrow linewidth fiber laser designed for short range high precision Coherent Doppler Wind LiDAR applications. Eye-safety working wavelength, single-frequency single longitudinal mode works with a long coherence length. The standard products use polarization-maintaining fiber output, high polarization extinction ratio (PER), output power up to 2W.
Techwin CKWIND series 1550nm high-power single-frequency fiber laser module uses the main oscillator power amplifier (MOPA) structure design. The DFB fiber laser seed has single-frequency, very low phase noise, narrow linewidth characteristics, and the cascaded low noise polarization-maintaining fiber amplifiers for power boosting. The modular design is compact and sturdy, suitable for use in a variety of harsh environments, typically used in wind power Coherent Wind LiDAR, airborne wind LiDAR and so on.
Coherent communication systems take advantage of the long coherence length of single frequency fiber lasers by mixing a detected optical system with a local laser oscillator to create a difference frequency signal which is detected and amplified. With ever-increasing demands for fiber-optic links to carry more data, coherent communication techniques offer solutions to increase the bandwidth of optical links.
A fiber optic coherent communications system that works on the principles of homodyning or heterodyning. The transmitting fiber laser produces an optical wave that is modulated in amplitude, phase or frequency by the signal; at the receiver end, the incoming signal is mixed with a laser beam tuned at or near the wavelength of the transmitter (a local oscillator) and downconverted in detection to the radio-wave domain for further signal processing. Coherent transmission is expected to increase sensitivity more than tenfold over direct detection.
Applications:
● Coherent Doppler LIDAR ● Environmental monitoring ● Pollution detection
● Coherent communication or sensing
● Other scientific research
Features:● Eye-safety wavelength 1550nm
● Narrow linewidth <15kHz ● Long coherent length
● Low RIN, low phase noise
● Single frequency, SLM output
● High polarization extinction ratio (PER)
Specifications:
|
Parameter |
Unit |
Spec |
||||
|
Min. |
Typ. |
Max. |
||||
|
Part number |
|
CKWIND-1550-M-SF |
||||
|
Center wavelength |
nm |
1540 |
1550 |
1565 |
||
|
Output power |
W |
0.5 |
0.6 |
2 |
||
|
Output beam quality |
M2 |
|
1.05 |
1.1 |
||
|
Operating mode |
|
CW SF SLM |
||||
|
SF seed laser |
|
DFB Fiber Laser |
||||
|
Linewidth |
kHz |
|
<15 |
50 |
||
|
Relative intensity noise (RIN peak) |
dBc/Hz |
|
-140 |
-135 |
||
|
RIN (1kHz-500kHz) |
dBc/Hz |
|
-145 |
-140 |
||
|
RIN (>3MHz) |
dBc/Hz |
|
-155 |
-150 |
||
|
Wavelength tunable range |
nm |
|
0.3 |
1 |
||
|
Output power stability |
% |
- |
1 |
2 |
||
|
High power 3-port optical circulator |
|
Optional |
||||
|
Output isolation |
dB |
35 |
- |
- |
||
|
Output polarization |
|
Linear |
||||
|
Polarization extinction ratio PER |
dB |
20 |
23 |
|
||
|
Power supply |
VDC |
12 |
|
24 |
||
|
Operating temperature |
℃ |
0 |
- |
50 |
||
|
Storage temperature |
℃ |
-40 |
- |
70 |
||
|
Main output fiber |
|
PM1550-XP |
||||
|
Main output fiber length |
m |
>0.3 |
||||
|
Main output fiber connector |
|
FC/APC |
||||
|
LO output fiber |
|
PM1550-XP |
||||
|
LO output fiber length |
m |
>0.3 |
||||
|
LO fiber connector |
|
FC/APC |
||||
|
Size |
mm |
200x135x41 |
||||