LD-PD's narrow linewidth single-frequency laser using an unique the semiconductor external cavity structure. The typical output bandwidth is less than 3KHz linewidth and the wavelength has low sensitivity to vibration. This device has high side-mode suppression ratio, low relative intensity noise and excellent wavelength stability for a variety of applications for harsh environment.
LD-PD’s narrow linewidth single-frequency laser has its own patents, high structural stability, mature technology and it is suitable for mass production. This devise complies with Telcordia GR-468 standard and has passed the long-term reliability test.
Product model
Name
Model
Description
Parameter
Price
Parameter
Features
● PM Fiber output, line width is less than 3KHz
● Low phase noise and relative intensity noise
● Stable structure, low sensitivity to vibration
● ITU-T Wavelength from 1530 to 1565nm, can be customized upon request
● Working temperature from 0 to 70 degrees
● Comply with Telcordia GR-468 standard
Laser Specifications
Optical Parameters (2)
No Fast Tuning
Option
Units
Linewidth (3)
< 5(A:<3, B: <5, C: <10)
< 20
kHz
Frequency Noise
5 Hz–1 kHz
1 kHz–100 kHz
100 kHz–3 MHz
3 MHz–100 MHz
< 1x106
< 5x103
< 5x105
< 1x105
< 2x106
< 5x104
< 5x105
< 1x105
Hz2/Hz
Frequency Stability
＜3
＜5
MHz
Side Mode Suppression Ratio
> 50
dB
Polarization Extinction Ratio
>20
dB
Light Isolation
>40
dB
Optical Signal Noise Ratio
＞60
dB
Relative Intensity Noise
< -140 (1 kHz - 10 kHz)
< - 160 (10 kHz - 1 MHz)
< -165 (1 MHz - 1 GHz)
dBc/Hz
Output Type
CW
Available Configurations
Units
Wavelength Option(1)
1525–1565 / 1617 (ITU grid)
nm
Output Power Option
10,30 or 60
mW
Fast Frequency Tuning Option
No Fast Tuning
Option
Fast Frequency Tuning Range
N/A
5
GHz
Electrical Parameters
Units
Power Supply
+ 4.75 to 5.25(Typ5）
VDC
Power Consumption (5)
< 6
W
Mechanical Parameters
Units
Operating Temperature
- 5 to + 70
℃
Storage Temperature
- 40 to + 85
℃
Humidity Level
95, Non-Condensing
%
Dimensions (H x W x L)
100×57×12
mm
Fiber Type
PM Panda
Optical Connector Type
FC / APC (Narrow Key), Key Aligned to Slow Axis
Computer Interface
Interface
RS-232
Connector
Hirose DF11-12DP-2DS
PC-Side Software (6)
LD-PD™ Control and Monitoring Software
Power and Communication Module
LD-PD’s 12 V PS-PU (Optional)
Fast Frequency Tuning (Option )
Units
Frequency Tuning Method
Through External Modulation Input
Tuning Voltage Magnitude(4)
2.5
V
Modulation Range(GHz)(Tuning Range)
5
GHz
Modulation rate(Tuning Speed)
Max 200
KHz
Typical specifications may vary depending upon user’s requirements
(1) In vacuum
(2) At nominal wavelength
(3) Linewidth Value measured by Autocorrelation heterodyne method
(4) Voltage must be fixed at 0V at turn-on and resets
(5) Typical at 25℃ for 60 mW output power
(6) Windows XP/VISTA/7 Compatible
Spectrum
Ultra-Narrow Linewidth(Down to 1.5KHZ)
The low frequency noise and narrow linewidth of our Module enables coherence lengths beyond 20 kilometers,
ideal for ranged applications such as Doppler LiDAR.
Fast Tuning
This module supports frequency tuning Range as high as 5GHz, frequency tuning Rate can be 200KHZ eliminating the need for an extra Modulator Voltage
Power Stability
Wavelength Stability
The module offers output power stability better than 0.3%, allowing for a better stable fiber sensor systems.
Low Optical Frequency Noise
The module features ultra-low Optical Frequency Noise.
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