CKSF-D-EY-M Narrow Linewidth Single Frequency Fiber Laser for Coherent LiDAR
Tehcwin CKSF-D-EY-M Erbium & Yetterbium Co-doped Fiber with Narrow Linewidth (<10kHz) and Low Phase Noise, Low Relative Intensity Noise (RIN) Single Frequency Fiber Laser Coherent LiDAR
Techwin CKSF-D is a low-noise Single Frequency Fiber Laser based on Distributed Feedback Bragg Grating (DFB) technology. It has independent intellectual property rights and achieves a stable single-frequency laser output with single longitudinal mode, linear polarization, and narrow linewidth. CKSF-D has very low phase and frequency noise and low relative intensity noise (RIN). Techwin uses unique packaging technology to ensure low-noise DFB single frequency fiber lasers with excellent wavelength stability.
Techwin uses extra-cavity technology to significantly suppress the relative intensity noise (RIN) of the DFB single frequency fiber laser, ensuring that the resonant cavity of the single frequency fiber laser is not disturbed. Please refer to CKSF-D-RS series products.
CKSF-D narrow linewidth single frequency fiber laser module has a small size, a sturdy package, strong resistance to environmental interference, and an output power of more than 100mW. CKSF-D-EY-M is based on Erbium & Yetterbium co-doped fiber with narrow linewidth (<10kHz) and low phase noise, low relative intensity noise (RIN). The standard wavelength is 1550.12nm, and the optional wavelength range is 1530-1570nm, such as the standard wavelength under the ITU framework. Other wavelengths can be customized according to requirements.
Single Frequency Fiber Lasers for Lidar: FMCW lidar: An alternative for self-driving cars. Frequency-modulated coherent lidar promises to collect more of the data computers need to drive cars—the challenge is to bring down costs and improve performance.Coherent lidars locate objects by mixing light reflected back from the object with light from the coherent laser transmitter. Motion of the object toward or away from the lidar Doppler-shifts the return signal, so mixing it with the local oscillator signal directly measures velocity in the line of sight with a single observation. As with pulsed lidar, the angle of the return signal measures the direction of the object from the transmitter. Analyzing the intermediate frequency generated by mixing the lidar return with the output signal measures object distance, and combining that with direction and velocity gives a three-dimensional location as well as velocity.
Features:
l Ultra-narrow linewidth <1kHz
l Very low phase noise and frequency noise
l Low relative intensity noise (RIN)
l Stable single frequency, single polarization output
l No mode-hopping
l Small sized package 145x100x25mm
l High reliability
Applications:
l Distributed optical fiber sensing
l Coherent LiDAR
l Fiber optic hydrophone
l Laser spectroscopy
l Coherent communication
l Gas absorption measurement
l Cold atomic physics
l Other scientific research
Specifications:
|
Parameter |
Unit |
Specification |
||
|
Min |
Typ. |
Max |
||
| Part no. |
|
CKSF-D-EY-M |
||
| Center wavelength |
nm |
1530-1572nm fixed, other specify |
||
| Output power |
mW |
5 |
50 |
100 |
| Laser output |
|
CW, Single frequency & Single longitudinal mode |
||
| Beam quality |
M2 |
- |
1.05 |
1.1 |
| Linewidth |
kHz |
- |
- |
1 |
| RIN peak frequency |
kHz |
500 |
600 |
700 |
| RIN peak |
dBc/Hz |
- |
-115 |
-100 |
| RIN @10MHz |
dBc/Hz |
- |
-140 |
-135 |
| Phase noise (1m OPD) |
urad/√Hz |
80@100Hz |
||
|
urad/√Hz |
7@10kHz |
|||
|
urad/√Hz |
0.7@100kHz |
|||
| SMSR (50pm resolution) |
dB |
60 |
>70 |
- |
| Output polarization |
|
Linear |
||
| Polarization extinction ratio (PER) |
dB |
20 |
23 |
- |
| Output power stability |
% |
- |
0.5 |
1 |
| Output isolation |
dB |
50 |
- |
- |
| Wavelength thermal tuning |
nm |
0.6 |
0.8 |
1.0 |
| PZT wavelength modulation |
|
Optional |
||
| Modulation frequency (linear) |
kHz |
DC |
10 |
20 |
| Modulation wavelength range |
GHz |
- |
>8 |
>10 |
| Operating temperature |
℃ |
0 |
- |
60 |
| Storage temperature |
℃ |
-40 |
- |
85 |
| Power supply |
VDC |
12 |
||
| Communication interface |
|
RS485 |
||
| Output fiber type |
|
Panda PM1550 |
||
| Output fiber length |
m |
> 0.5 |
||
| Optical connector |
|
FC/APC |
||
| Dimension |
mm |
145x100x25 |
||
| Weight |
kg |
<0.5 |
||
|
