Custom 3kHz Narrow Linewidth Butterfly Laser Diode
Description：We support customization of 3kHz narrow linewidth butterfly lasers with wavelengths ranging from 1511 to 1590 nm and an output power of 20 mW.
Applications： Fiber Optic Sensing Lidar Scientific Research Equipment
Wavelength：1550nm
Output Power：20mW
Model：UNL-XXXX-20-X-BF
Dongz
Email: Sales@wxgphotonics.com
narrow linewidth frequency-stabilised laser, based on an external cavity design, features ultra-low RIN noise, exceptionally narrow linewidth, and high output optical power. It is currently widely employed in automotive LiDAR, fibre optic sensing and detection systems, and high-precision measurement applications.
Customisation services are available to meet client requirements, accompanied by corresponding technical support.
Specifications
| Specifications | Symbol | Min | Typ | Max | Unit | Condition |
|---|---|---|---|---|---|---|
| Output Power | CW@Po | 10 | 110 | mW | Customisable | |
| Centre Wavelength | λc | 1530 | 1550 | 1565 | nm | Customisable |
| Spectral Linewidth (FWHM) | νL | 2 | 20 | KHz | Lorentzian line width | |
| Sideband Suppression Ratio | SMSR | 40 | dB | CW, @Po | ||
| Polarisation Extinction Ratio | PER | 20 | dB | Applicable to polarisation-maintaining, along the slow axis | ||
| Relative Intensity Noise | RIN | -155 | dB/Hz | |||
| Optical Isolation | ISO | 40 | dB | |||
| TEC Set Temperature | TTEC | 15 | 40 | ºC | ||
| Threshold Current | Ith | 15 | 40 | mA | @TTEC | |
| LD Operating Current | Ib | 160 | 500 | mA | CW, Po | |
| LD Operating Voltage | Vf | 1.5 | 1.8 | V | CW, Po | |
| TEC Voltage | VTEC | 4.8 | V | |||
| TEC Current | ITEC | 2.5 | A | |||
| Output Method | SM/PM fibre output (default) | |||||
| Interface Type | FC/APC（default） | |||||
| Operating Temperature | To | -40 | 25 | 80 | ⁰C | |
| Storage Temperature | Ts | -40 | 80 | ⁰C | ||
Note: The line width test scheme employs a delayed heterodyne method for beat frequency testing.
Dimensions and Pin Definitions
| Dimensions | Description | Dimensions | Description |
|---|---|---|---|
| 1 | Thermistor | 8 | Not connected |
| 2 | Thermistor | 9 | Package |
| 3 | Laser cathode DCBias Current (-) | 10 | Package |
| 4 | PD Anode (-) | 11 | Laser Anode (+) |
| 5 | PD Cathode (+) | 12 | Not connected |
| 6 | TEC + | 13 | Laser Anode (+) |
| 7 | TEC - | 14 | Package |
| 8 | Thermistor | 15 | Not connected |
Test Report
We customize butterfly lasers with different wavelengths for our customers. Below are test reports for three lasers with distinct wavelengths.
| Center Wavelength | Linewidth | Output Power |
|---|---|---|
| 1580nm | 3kHz | 20mW |
| 1530nm | 3kHz | 20mW |
| 1560nm | 3kHz | 20mW |
Custom laser with a wavelength of 1580 nm, linewidth less than 3 kHz, and an output power of 20 mW.
Custom laser with a wavelength of 1530 nm, linewidth less than 3 kHz, and an output power of 20 mW.
Custom laser with a wavelength of 1560 nm, linewidth less than 3 kHz, and an output power of 20 mW.
