1550nm 5mW/10mW/20mW DFB Laser Diode 14-Pin Butterfly SM/PM Fiber Laser
High Power DFB FP Laser Diode
Product Details
DFB HCW-PLD1550Dxx (1550nm-1552nm) available in A, B, C, E, S-type versions and coaxial TEC package versions.
DFB (Distributed Feedback Laser)
DFB lasers use grating filter devices to achieve single longitudinal-mode output based on FP lasers. Available in 1310nm and 1550nm wavelengths, with both refrigerated and non-refrigerated versions, primarily used for high data rate long-distance transmission (40+ km, 1.25G+ rates).
DFB Laser Performance Parameters
- Working wavelength: Center wavelength of emitted spectrum
- Side mode suppression ratio: Power ratio between main mode and maximum side mode
- 20dB spectral width: Spectral width at 20dB below peak output
- Threshold current: Minimum current required for proper laser operation
- Output power: Optical power emitted from laser output port
| 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 |
Key Features
- Built-in optical isolator
- Low capacitance and low dark current
- High stability DFB laser die
- Low threshold current and operating current
- Integrated high isolation with low insertion loss
FP (Fabry-Perot) Laser Comparison
FP lasers are primarily used for low data rate short-distance transmission (under 20 km, under 1.25G rates), available in 1310nm and 1550nm wavelengths.
FP Laser Performance Parameters
- Working wavelength: Center wavelength of emitted spectrum
- Spectral width: RMS spectral width of multi-longitudinal mode laser
- Threshold current: Minimum current required for proper laser operation
- Output power: Optical power emitted from laser output port
Key Differences Between FP and DFB Lasers
The primary difference is spectral width: DFB lasers have narrow spectral width (single longitudinal mode) while FP lasers have wider spectral width (multi-longitudinal mode). Working wavelength, threshold current, and voltage also differ between the two types.
Frequently Asked Questions
Q1: Are you a trading company or manufacturer?
A: We are factory verified by TUV
Q2: What is your delivery time?
A: Sample: 3-5 working days. Formal order: 7-10 working days.
Q3: Do you provide OEM service?
A: Yes, we can print your logo/label on products or packaging.
Q4: Can you provide free samples?
A: Some low-value samples are free, but shipping costs must be paid.
Q5: How do you guarantee quality?
A: All products undergo 100% testing before shipment.
Q6: What are your payment terms?
A: Samples: 100% payment. Formal orders: 30% deposit, 70% balance before shipment.
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