GK Semi

Laser Products

GKLD-1270-003W-19

1270 nm Packaged Laser

Key silicon-photonics band · High optical output | Enabling next-generation optical communication and precision sensing.

GKLD-1270-003W-19 product photograph
Wavelength1270 nm
Output3 W
Operating modeCW
Spectral width11 nm
Pulse / dutyContinuous wave

01 / Product introduction

Product introduction

This 1270 nm 3 W semiconductor laser is built on an advanced InP multi-quantum-well epitaxial structure with an optimised thermal-management package, giving high electro-optical conversion efficiency, good beam quality and long-life reliability. As the first standard wavelength of O-band (1260–1360 nm) CWDM, 1270 nm brings clear advantages to high-speed optical communication, fiber sensing and selected medical applications.

02 / Core application scenarios

Core application scenarios

01
Optical communication and data centresExternal light sources (ELS) for 400G / 800G / 1.6T silicon-photonics modules and CWDM fiber transmission systems.
02
Fiber sensing and inspectionDistributed fiber sensing (DAS/DTS), high-power pulsed sources for optical time-domain reflectometry (OTDR) and spectral analysis.
03
Medical and biophotonicsDepth-selective skin phototherapy, biomedical imaging such as photoacoustic imaging, and medical diagnostic equipment.
04
Laser pumpingWavelength-matched pump sources for specialty fiber and solid-state lasers.

03 / Core advantages

Core advantages

01
3 W continuous outputUp to 3 W of CW output in the 1270 nm O-band meets the needs of high-power optical transmission and high signal-to-noise sensing.
02
Efficient conversionA 1 A threshold with 0.35 W/A slope efficiency controls operating temperature rise and lowers total system power draw.
03
Low thermal driftAn optimised package and heat-sink structure hold temperature drift to 0.3 nm/°C, keeping spectral purity and output consistent across the operating range.
04
Full-chain autonomyAn in-house compound-semiconductor chip and packaging platform gives controlled quality and supports customised package formats and optical interfaces.

04 / Core technical specifications

Core technical specifications

Wavelength
1270 nm
Output
3 W
Operating mode
CW
Spectral width
11 nm
Pulse / duty
Continuous wave
Drive
9 A / 1.8 V
Thermal control
15–35 °C
Package
AlN ceramic package
Output interface
Free-space / package dependent

04 / Project integration

Integration essentials

Drive
9 A / 1.8 V
Thermal control
15–35 °C
Package
AlN ceramic package
Output interface
Free-space / package dependent