Laser Diodes & Sources
ASE 1550nm Broadband Light Sources
The ASE (Amplified Spontaneous Emission) light source series provides a singlemode broadband emission with low coherence and randomized polarization, making it ideal for high-precision measurement applications. The design utilizes rare-earth-doped fibers pumped by a cooled laser source, enhancing longevity and reliability. Featuring precision feedback control, the unit ensures high stability. The ASE 1550 is available in two wavelength bandwidth configurations: C-band (1528–1563 nm) and C+L band (1528–1615 nm). We offer both OEM modules with a driving PCB and plug-and-play benchtop units. A flat version integrates special filters for a flat spectral output to meet specialized application needs in the C-band. The ASE is also an excellent polarization light source with a high and stable polarization extinction ratio.

Configuration options
Build & quote
Configure the options below and add your exact build to the enquiry — we confirm the part number and availability.
We confirm the exact part number for your configuration on enquiry.
Power: 10mW · Wavelength: C · Polarization: SM28 · Config: Mini-benchtop · Interface: Non · Flatness Filter: Non · Connector: None
System integration
Integration and compatibility
Use these checks to connect ASE 1550nm Broadband Light Sources to the surrounding optical, mechanical and control system. Every value shown is taken from this model's own specification record.
- Optical interface and fiber
- Interface: Non, USB, RS232 · Connector: None, FC/PC, FC/APC, SC/PC, SC/APC, LC/PC, LC/APC, LC/UPC, Special
- Specify connector polish and fiber architecture together. FC/PC, FC/APC and SMA interfaces, and single-mode, multimode and polarization-maintaining fibers, impose different return-loss, mode-field and alignment requirements.
- Wavelength and loss budget
- Wavelength: C, C+L, Special
- Check the Laser Diodes & Sources passband, insertion loss, return loss and power handling at the actual source wavelength; a nominal telecom-band label is not a substitute for the configured range.
Technical FAQ
Integration questions for ASE 1550nm Broadband Light Sources
Which fiber and connector does the ASE 1550nm Broadband Light Sources use?
Interface: Non, USB, RS232 · Connector: None, FC/PC, FC/APC, SC/PC, SC/APC, LC/PC, LC/APC, LC/UPC, Special. Specify connector polish and fiber architecture together. FC/PC, FC/APC and SMA interfaces, and single-mode, multimode and polarization-maintaining fibers, impose different return-loss, mode-field and alignment requirements.
How should the ASE 1550nm Broadband Light Sources be included in an optical power budget?
Wavelength: C, C+L, Special. Check the Laser Diodes & Sources passband, insertion loss, return loss and power handling at the actual source wavelength; a nominal telecom-band label is not a substitute for the configured range.
Need this configured?
Share your wavelength, fiber type, connector, power handling and control requirements and we will qualify the matching configuration and part number.
Model selection
Nearby series comparison
Compare ASE 1550nm Broadband Light Sources with the closest available models in the Laser Diodes & Sources family.
| Selection parameter | ASE 1550nm Broadband Light Sources (current) | Certified Laser Safety Glasses |
|---|---|---|
| Wavelength range | C, C+L, Special | 190-380, 190-450, 190-534, 585-595, 662-835, 765-800, 750-1064, 800-818, 950-1080, 960-1064, 980-1070, 1010-1500 |
| Connector / control | None, FC/PC, FC/APC, SC/PC, SC/APC, LC/PC, LC/APC, LC/UPC, Special | — |



