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1550nm 75mw DFB Laser Diode Module with 30dB Isolator for High-Precision Laser Welding
1550nm 75mw DFB Laser Diode Module with 30dB Isolator for High-Precision Laser Welding
1550nm 75mw DFB Laser Diode Module with 30dB Isolator for High-Precision Laser Welding
1550nm 75mw DFB Laser Diode Module with 30dB Isolator for High-Precision Laser Welding
1550nm 75mw DFB Laser Diode Module with 30dB Isolator for High-Precision Laser Welding
1550nm 75mw DFB Laser Diode Module with 30dB Isolator for High-Precision Laser Welding
1550nm 75mw DFB Laser Diode Module with 30dB Isolator for High-Precision Laser Welding
1550nm 75mw DFB Laser Diode Module with 30dB Isolator for High-Precision Laser Welding
1550nm 75mw DFB Laser Diode Module with 30dB Isolator for High-Precision Laser Welding
1550nm 75mw DFB Laser Diode Module with 30dB Isolator for High-Precision Laser Welding
1550nm 75mw DFB Laser Diode Module with 30dB Isolator for High-Precision Laser Welding
1550nm 75mw DFB Laser Diode Module with 30dB Isolator for High-Precision Laser Welding
Specifications
Model Number :
DFB 1550 /1650 nm
Place of Origin :
Guangdong, China
Brand Name :
Hicorpwell
MOQ :
20
Wavelength :
1550nm, 780nm
Output Power :
75mw
Fiber Type :
Nufern fiber
Laser Type :
DFB Laser
Package Type :
Butterfly Packaged
Structure Type :
MQW-DFB structure
Isolator :
30dB
Threshold Current :
Low
Operating Current :
Low
Spectral Width :
Narrow (DFB)
Transmission Distance :
Above 40km
Data Rate :
Above 1.25G
Capacitance :
Low
Dark Current :
Low
Insertion Loss :
Low
Description
Machine Packaging High Power Manufacturers DFB FP Laser Diode
Product Detail

DFB HCW-PLD1550Dxx (1550nm-1552nm) Can be A,B ,C E , S-type version and in a coaxial TEC package version as well.

DFB ( Distributed Feedback Laser) laser use the grating filter device to make the device have only one longitudinal-mode output based on the FP laser.DFB generally also use two wavelengths 1310nm and 1550nm, divides into refrigeration and No-refrigeration, mainly used for high data rate long-distance transmission.The transmission distance is generally above 40 kilometers, the rate is above 1.25G.

The performance parameters of DFB laser:

1）Working wavelength: Emitted the center wavelength of spectrum by laser.
2）The suppression ratio of side mode: The power ratio of the main mode and the maximum side mode of the laser.
3）Decreased the spectral width of 20dB: Decreased the spectral width of 20dB by the highest point of the laser output spectrum.
4）Threshold current: The laser send out a very good laser when the working current of the device exceeds the threshold current.
5）Output power: The optical power emitted by the output port of the laser.
Keywords
Laser Diode Module With Fiber Collimator 1550 nm
Product name
Laser Diode With Pigtail
Structure Type
MQW-DFB structure
Package Type
Coaxial package
Application
Laser Welding
Type
Laser Diode
Laser Type
Fiber Laser
Isolator
30dB

Features

Ø Built - in optical isolator
Ø Low capacitance and low dark current
ØHigh stability of DFB lasers die
Ø Low threshold current , low operating current
Ø Integrated high isolation , low insertion loss

FP (Fabry-perot) laser is mainly used for low data rate short-distance transmission, the transmission distance is generally within 20 km,the rate is generally within 1.25G. FP is divided into two wavelengths, 1310nm/1550nm.

Some customer in order to decrease the cost , so chose the FP laser to make the 1.25G 40km module.

Reason by make the module reach the 40km transmission distance, the engineer must adjust the output power rather bigger to meet the distance, but it will make the laser ageing fastly cause more issue.

The performance parameters of FP laser:

1）Working wavelength: Emitted the center wavelength of spectrum by laser.
2）The width of spectral: RMS spectral width of multi-longitudinal mode laser.
3）Threshold current: The laser send out a very good laser when the working current of the device exceeds
the threshold current.
4）Output power: The optical power emitted by the output port of the laser.


The Difference Between FP And DFB Laser :

The main difference can be got by the form between the FP and DFB laser is that the spectral width is different. The spectral width of the DFB laser is generally narrow, is a single longitudinal mode with distributed negative feedback. While the spectral width of the FP laser is relatively wide, it is a multi-longitudinal mode laser. The working wavelength, threshold current and voltage are also different.

Thanks for your reading! Hope these shares will give you some understanding of FP and DFB lasers!
Welcome to discuss with the industry’s elite together, also hope to provide your valuable views and suggestion, creating progress together with you！
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1550nm 75mw DFB Laser Diode Module with 30dB Isolator for High-Precision Laser Welding

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Product Detail
Model Number :
DFB 1550 /1650 nm
Place of Origin :
Guangdong, China
Brand Name :
Hicorpwell
MOQ :
20
Wavelength :
1550nm, 780nm
Output Power :
75mw
Contact Supplier
1550nm 75mw DFB Laser Diode Module with 30dB Isolator for High-Precision Laser Welding
1550nm 75mw DFB Laser Diode Module with 30dB Isolator for High-Precision Laser Welding
1550nm 75mw DFB Laser Diode Module with 30dB Isolator for High-Precision Laser Welding
1550nm 75mw DFB Laser Diode Module with 30dB Isolator for High-Precision Laser Welding
1550nm 75mw DFB Laser Diode Module with 30dB Isolator for High-Precision Laser Welding
1550nm 75mw DFB Laser Diode Module with 30dB Isolator for High-Precision Laser Welding

Shenzhen Hicorpwell Technology Co., Ltd

Verified Supplier
8 Years
guangdong, shenzhen
Since 2013
Business Type :
Manufacturer, Importer, Exporter
Main Products :
Bare Optical Fiber, Glass Fiber Optic Cable, Fiber Optic Pigtail
Total Annual :
3,000,000-5,000,000
Employee Number :
160~166
Certification Level :
Verified Supplier
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