Connet Laser Technology Co., Ltd.
2018-11-12
The 1550nm pulsed laser source for DTS of Connet is a pulsed laser source with high efficiency based on eye-safety wavelength. The laser employs the configuration of master oscillator power amplifier (MOPA) and the high performance narrow linewidth DFB (external cavity) semiconductor laser as seed source and meanwhile internally integrates the signal generator. Using the optimized design of the multi-stage amplification, the laser can achieve the high peak power with the ns level pulse width, which is very suitable for the areas of the distributed fiber temperature measurement system (DTS), optical fiber sensing, LiDAR and some other related applications.
Connet 1550nm pulsed laser source for DTS employs the modularized package with compact structure and small size. It adopts the 5-12V direct-current supply and the industrial standard DB25 communication port design. The user can easily operate the laser through the upper computer software. In addition, the pulse output also can be achieved by the external TTL trigger signal, which is very suitable for system integration.
Features：
• Eye-safety wavelength: 1550nm
• High peak power: 60W
• Adjustable repetition rate: 1kHz-1MHz
• Adjustable pulse width: 1ns-250ns
• Nearly diffraction-limited beam quality
• DC supply, Modularized package
Applications:
• Distributed temperature measurement system (DTS)
• Optical fiber sensing
• LiDAR
• Telemetry
• Free space communication
• Other scientific research
Main Test Data:
|
Parameter |
Test Result |
|
Maximum Pump Output Power |
300mW |
|
Average Output Power @1ns/500kHz |
61.5mW |
|
Central Wavelength |
1550.02nm |
|
Adjustable Pulse Width |
1~13ns |
|
Operating Temperature |
-40℃~+65℃ |
|
Storage Temperature |
-40℃~ +85℃ |
|
Output Fiber Type |
MM-62.5/125 |
|
Output Fiber Connector |
FC/APC |
|
Output Fiber length |
1m |
|
Output Spectrum |
See below |
Data @15W Output Peak Power:
|
Pump Output Power(mW) |
Pulse Width/Repetition Rate |
Output Average Power(mW)1 |
|
50 |
1ns/20kHz |
1.3 |
|
50 |
1ns/500kHz |
8.0 |
Data @Maximum Output Average Power:
|
Pump Output Power(mW) |
Pulse Width/Repetition Rate |
Output Average Power(mW)1 |
|
300 |
1ns/20kHz |
7.2 |
|
300 |
1ns/500kHz |
61.5 |
Notes:The output average power is measured with the fiber connector.
Product Information and Main Test Equipment：
|
Product |
1550nm Pulsed Laser Source for DTS |
|
P/N |
VFLS-1550-M-PL |
|
S/N |
201712092 |
|
Main Test Equipment |
Power Meter (Coherent FieldMaxII-TO-PS19Q) |
|
Spectrometer (Anritsu MS9710C) |
|
|
Oscilloscope (Tektronix MDO4104C) |
Test Environment and Power Supply:
|
Parameter |
Test Result |
|
Power Supply |
5~12VDC, 3A |
|
Operating Temperature |
-40~+65℃ |
|
Test Temperature |
25℃ |
|
Humidity |
<90% |
|
warm-up Time |
<30mins |
Schematic Diagram of Test:
▲ Measured Pulse Width @ 1ns ▲ Measured Repetition Rate @20kHz
▲ Measured Repetition Rate @500kHz ▲ Output Spectrum @1ns/20kHz with the peak power of 15W
▲ Output Spectrum @1ns/500kHz with the peak power of 15W ▲ Output Spectrum @1ns/20kHz with the Max Output Average Power of 7.2mW
▲ Output Spectrum @1ns/500kHz with the Max Output Average Power of 61.5mW
Notes:
The output fiber type of the laser is the multimode fiber (MM-62.5/125). The output pulse will fluctuate correspondingly while the pigtail fiber is wobbled. After the pigtail fiber is stabilized, the output pulse will restore to stability.
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