1550nm Pulsed Laser Source for DTS

DTS-1064The 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:

QQ图片20181122155550

图片2        图片3

                  ▲ Measured Pulse Width @ 1ns                                                                  ▲ Measured Repetition Rate @20kHz

图片4     图片5

                  ▲ Measured Repetition Rate @500kHz                                                ▲ Output Spectrum @1ns/20kHz with the peak power of 15W

图片8       图片7

        ▲ Output Spectrum @1ns/500kHz with the peak power of 15W           ▲ Output Spectrum @1ns/20kHz with the Max Output Average Power of 7.2mW

   图片6

    ▲ 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.


Post time: Nov-22-2018