1550nm Ultra-narrow Line-width DFB Fiber Laser Single-frequency Laser

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1550nm Ultra-narrow Line-width DFB Fiber Laser Single-frequency Laser

Ultra narrow linewidth single frequency fiber laser is a low noise single frequency fiber laser using a unique, rare earth doped fiber DFB laser cavity structure, ensure the single frequency narrow linewidth fiber laser to optimize the optical design, the output linewidth of kHz magnitude, the output spectrum side-mode suppression ratio(SMSR) over 60dB. At the same time, the unique polarization control technology and noise suppression technology were adopted to achieve stable linear polarization, single longitudinal mode, ultra narrow linewidth single frequency laser output, and ultra-low phase noise and intensity noise.

1. Spectral line width ≤ 3KHz
2. Maximum coherent length > 100km
3. Stable optical fiber, DFB resonator structure
4. High frequency stability
5. High side mode rejection ratio
6. Anti earthquake design of module
7. Low relative intensity noise

1. Laser seed source
2. Acoustic sensing, hydrophone
3. Fiber Distributed Sensing
4. Coherent optical communication

[Optical Specifications]

Parameter Unit Value
Center Wavelength nm 1550
Spectral Signal Bbackground Ratio dB > 60
Light Wave Mode   Single longitudinal mode continuous wave
Output Power(Optional) mW

10mW /  20mW 

Polarization State   Linear polarization
Polarization Extinction Ratio dB >23
Polarization   99%
Spectral linewidth kHz 3  (Default)  (10kHz can be customized.)
Frequency Instability MHz <20 (15min) <100 (long term)
Relative Intensity Noise @>3MHz dB/Hz <-110dB/Hz@ROF peak, <-120dB/Hz@1MHz
Phase nNoise @1-9.5KHz dB < -110
Power Instability @>8hours   <1%
Output Fiber Type (Optional)  

Ordinary single mode fiber SMF-28e (Default)

polarization maintaining fiber PM1550

[Environment and Power Supply]

Parameter Unit Value
Power Supply VDC 5
Maximum Power Consumption W 10
Pigtail Length m 1
Output Connector   FC/APC
Operating Temperature +5 ~ +40℃
Storage Temperature -10 ~ +60℃
Relative Humidity % 0~80
Size (Optional) mm Standard type: 240(W) x 85(D) x 25(H)
LCD Professional type: 260(W) x 320(D) x 120(H)


60dB DFB Fiber Laser

60dB DFB Fiber Laser

60dB DFB Fiber Laser

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