Swedish Laser Diode NRZ
Swedish laser diodes with NRZ modulation, such as those from Cobolt, offer high reliability, compact design, and performance suitable for advanced photonics and optical communication applications.
Overview
Swedish laser manufacturers, notably Cobolt, provide a wide range of diode lasers including narrow linewidth, single-frequency, and tunable lasers across the UV-Visible-NIR spectrum. These lasers are known for high reliability, long lifetime, and low relative intensity noise (RIN), making them suitable for applications in optogenetics, spectroscopy, and high-speed optical communications . Cobolt lasers utilize proprietary HTCure™ manufacturing technology, ensuring consistent performance and robustness.
NRZ Laser Diode Specifications
For high-speed optical communication, 1300 nm 28 Gb/s NRZ DFB laser diode chips are commonly used. Key specifications include :
- Wavelengths available: 1270 nm, 1310 nm, 1330 nm
- Modulation speed: up to 28 Gb/s NRZ
- Operating temperature: -40°C to 90°C (uncooled)
- Output power: typical 5.5 mW at 60 mA bias
- Side Mode Suppression Ratio (SMSR): ≥30 dB
- Beam divergence: 30–40° horizontal, vertical varies
- Package: non-hermetic, RoHS compliant, top anode/backside cathode configuration These diodes are qualified according to GR-468, ensuring reliability in non-hermetic packages, and are suitable for fiber-optic transceivers and high-speed data links.
Applications
- Telecommunications: 10G/25G/28G optical links
- Data centers: high-speed fiber interconnects
- Sensing and instrumentation: spectroscopy, LIDAR, and environmental monitoring
- Research: photonics experiments requiring stable, narrow-linewidth sources
Supplier Context
- Cobolt (Sweden): Offers compact, single-frequency diode lasers with ultra-low RIN and high stability .
- Coherent Corp: Provides 28 Gb/s NRZ DFB laser diode chips suitable for 1300 nm fiber-optic applications .
- Laser Components Nordic: Supplies a broad range of laser diodes, detectors, and optics for photonics applications in the Nordic region .
Summary
Swedish NRZ laser diodes, particularly from Cobolt, combine high-speed modulation, reliability, and compact design, making them ideal for telecom, research, and advanced photonics applications. When selecting a diode, consider wavelength, modulation speed, temperature range, and output power to match your system requirements.
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