Transmitters & Receivers
Electro-Absorption Modulated Laser (EML) 12GHz
The EMLT Series Electro-Absorption Modulated Laser Transmitter is a semiconductor laser that integrates a distributed feedback (DFB) laser and an electro-absorption modulator (EAM) within a single package. This design eliminates the need for external modulators, reducing system complexity, power consumption, and size while improving thermal management. Capable of modulation speeds up to 20 GHz for both analog and digital responses, the EMLT delivers high-speed modulation with precise optical output control. The integrated EAM minimizes wavelength shifts during modulation, ensuring stable signal transmission over long distances, making the EMLT ideal for high-speed optical communication systems. Its compact and efficient design is well-suited for modern applications requiring reliable, high-performance data transmission.

Configuration options
Build & quote
Configure the options below and add your exact build to the enquiry — we confirm the part number and availability.
Part number: EMLT-A4955111N
Speed: 10GHz · Wavelength: 1549.55 nm · Output Fiber: SM28 · Cable: 0.9mm tube · Fiber Length: 0.5m · Connector: None
System integration
Integration and compatibility
Use these checks to connect Electro-Absorption Modulated Laser (EML) 12GHz to the surrounding optical, mechanical and control system. Every value shown is taken from this model's own specification record.
- Optical interface and fiber
- Output Fiber: SM28 · Fiber Length: 0.5m
- 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: 1549.55 nm, 1550.55 nm, 1528.8 nm, 1530.3 nm, 1531.1 nm, 1533.4 nm, 1534.3 nm, 1535.8 nm, 1538.2 nm, 1539.0 nm, 1539.8 nm, 1540.8 nm, 1541.4 nm, 1542.1 nm, 1545.3 nm, 1546.1 nm, 1547.7 nm, 1550.1 nm, 1551.7 nm, 1552.6 nm, 1553.3 nm, 1554.1 nm, 1555.8 nm, 1556.6 nm, 1557.4 nm, 1558.2 nm, 1559.0 nm, 1559.8 nm, 1560.6 nm, 1561.4 nm, 1562.2 nm, 1563.1 nm, 1563.8 nm
- Check the Transmitters & Receivers 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 Electro-Absorption Modulated Laser (EML) 12GHz
Which fiber and connector does the Electro-Absorption Modulated Laser (EML) 12GHz use?
Output Fiber: SM28 · Fiber Length: 0.5m. 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 Electro-Absorption Modulated Laser (EML) 12GHz be included in an optical power budget?
Wavelength: 1549.55 nm, 1550.55 nm, 1528.8 nm, 1530.3 nm, 1531.1 nm, 1533.4 nm, 1534.3 nm, 1535.8 nm, 1538.2 nm, 1539.0 nm, 1539.8 nm, 1540.8 nm, 1541.4 nm, 1542.1 nm, 1545.3 nm, 1546.1 nm, 1547.7 nm, 1550.1 nm, 1551.7 nm, 1552.6 nm, 1553.3 nm, 1554.1 nm, 1555.8 nm, 1556.6 nm, 1557.4 nm, 1558.2 nm, 1559.0 nm, 1559.8 nm, 1560.6 nm, 1561.4 nm, 1562.2 nm, 1563.1 nm, 1563.8 nm. Check the Transmitters & Receivers 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 Electro-Absorption Modulated Laser (EML) 12GHz with the closest available models in the Transmitters & Receivers family.
| Selection parameter | Electro-Absorption Modulated Laser (EML) 12GHz (current) | DFB Butterfly Fiber Optic Transmitter 3GHz | Electro-Absorption Modulated Laser (EML) 30GHz |
|---|---|---|---|
| Wavelength range | 1549.55 nm, 1550.55 nm, 1528.8 nm, 1530.3 nm, 1531.1 nm, 1533.4 nm, 1534.3 nm, 1535.8 nm, 1538.2 nm, 1539.0 nm, 1539.8 nm, 1540.8 nm, 1541.4 nm, 1542.1 nm, 1545.3 nm, 1546.1 nm, 1547.7 nm, 1550.1 nm, 1551.7 nm, 1552.6 nm, 1553.3 nm, 1554.1 nm, 1555.8 nm, 1556.6 nm, 1557.4 nm, 1558.2 nm, 1559.0 nm, 1559.8 nm, 1560.6 nm, 1561.4 nm, 1562.2 nm, 1563.1 nm, 1563.8 nm | 1550.32 | 1549nm, 1550nm |
| Connector / control | None, SC/PC, FC/PC, LC/PC | FC/APC, FC/PC, Non, SC/PC, SC/APC, LC/PC, LC/UPC, Special | SC/PC, FC/PC, LC/PC, Special |




