1550nm 20mW Single-Frequency Narrow-Linewidth Fiber Laser Module Type NLSL-1550-20-SM-M
The single-frequency narrow linewidth fiber laser uses an ultra-narrow linewidth external cavity semiconductor laser chip to output a single longitudinal mode laser with a wavelength of 1550nm. The spectral linewidth is less than 100kHz. The single-mode or polarization-maintaining fiber coupling output is available in module or desktop packaging. Cost-effective laser source for distributed sensing.
[Features]
Spectral linewidth ≤ 100kHz
All-fiber DFB resonator
Wavelength stable without mode hopping
[Applications]
Lidar
Acoustic sensing, hydrophone
Optical fiber distributed sensing
[Specification]
|
Parameters
|
Unit
|
Typical Value
|
Remarks
|
|
Model
|
--
|
NLSL-1550-20-SM-M
|
|
|
Working Wavelength
|
nm
|
1550±1
|
|
|
Spectral Linewidth
|
kHz
|
≤ 100
|
*3dB line width=20dB line width/20
|
|
Sideband Suppression Ratio
|
dB
|
≥50
|
|
|
Wavelength instability
|
MHz
|
≤±100
|
@8h
|
|
Working Mode
|
-
|
CW
|
Continuous Laser
|
|
Output Power
|
mW
|
20
|
|
|
Polarization state
|
-
|
Random polarized
|
|
|
Short-term Stability (15 minutes)
|
dB
|
≤ ±0.02
|
Equivalent≤±0.5%
|
|
Long-term Stability (8 hours)
|
dB
|
≤ ±0.05
|
Equivalent≤±1.2%
|
|
Pigtail Fiber Type
|
--
|
SMF-28 SM Fiber
|
L=1m
|
|
Fiber Interface Type
|
--
|
FC/APC
|
|
|
Electrical and environmental parameters
|
DeskTop Type
|
Module Type
(Current product)
|
|
Control method
|
Button
|
RS232 Serial communication
|
|
Communication interface
|
DB9 Female(Default not include)
|
DB9 Female
|
|
Power supply
|
AC 100~240V
|
DC 5V, 3A
|
|
Size
|
260(W)×280(D)×120(H)mm
|
90(W)×70(D)×15(H)mm
|
|
Operating temperature range
|
-5~+35°C
|
|
Operating humidity range
|
0~70%
|
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