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Laser Diode (Transmitter) Component – Computer, Electronic and Optical Product Manufacturing

Q: What is the typical lifespan of a laser diode in a transceiver module?

Typically 100,000 hours or more under normal operating conditions, depending on temperature and drive current.

Q: How does wavelength affect laser diode performance?

Wavelength determines transmission distance and fiber type compatibility: 850nm for multimode short-range, 1310nm/1550nm for single-mode long-range.

Component Specifications

Definition

A laser diode is a semiconductor device that emits coherent light through stimulated emission when electrically pumped. In transceiver modules, it serves as the transmitter component, converting electrical signals into optical signals for fiber optic communication. It operates at specific wavelengths (commonly 850nm, 1310nm, or 1550nm) and is designed for high-speed data transmission with low power consumption and high reliability.

Working Principle

Works on the principle of stimulated emission in a semiconductor p-n junction. When forward-biased, electrons and holes recombine in the active region, emitting photons. Optical feedback from the diode's facets creates a resonant cavity, amplifying light to produce a coherent laser beam. The output is modulated by varying the injection current to encode data.

Materials

Gallium Arsenide (GaAs) for 850nm, Indium Phosphide (InP) for 1310nm/1550nm wavelengths; Aluminum Gallium Arsenide (AlGaAs) or Indium Gallium Arsenide Phosphide (InGaAsP) for cladding layers; Gold or solder for contacts; Ceramic or metal packages.

Technical Parameters

Wavelength 850nm, 1310nm, 1550nm
Output Power 0.5mW to 10mW
Package Type TO-can, Butterfly, DIL
Spectral Width <1nm
Threshold Current 10mA to 50mA
Modulation Bandwidth Up to 25GHz
Operating Temperature -40°C to 85°C

Standards

ISO/IEC 11801, DIN EN 50173, ITU-T G.957

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Laser Diode (Transmitter).

Parent Products

This component is used in the following industrial products

Transceiver Module

A compact electronic component that integrates both transmitter and receiver functions for data communication.

View Product Details

Engineering Analysis

Risks & Mitigation

Thermal runaway due to overheating
Optical feedback damage
Electrostatic discharge (ESD) sensitivity
Wavelength drift over time

FMEA Triads

Trigger: Excessive drive current or high ambient temperature
Failure: Catastrophic optical damage (COD) or rapid degradation
Mitigation: Implement automatic power control (APC) circuits, use thermoelectric coolers (TECs), and ensure proper heat sinking.

Trigger: ESD during handling or installation
Failure: Sudden failure or reduced output power
Mitigation: Follow ESD protection protocols, use antistatic packaging, and design with ESD protection diodes.

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance

Wavelength tolerance ±10nm, output power tolerance ±20%

Test Method

L-I-V testing (Light-Current-Voltage), spectral analysis, eye diagram testing per IEEE 802.3 standards

Buyer Feedback

★★★★☆ 4.5 / 5.0 (16 reviews)

"The technical documentation for this Laser Diode (Transmitter) is very thorough, especially regarding technical reliability."

"Reliable performance in harsh Computer, Electronic and Optical Product Manufacturing environments. No issues with the Laser Diode (Transmitter) so far."

"Testing the Laser Diode (Transmitter) now; the technical reliability results are within 1% of the laboratory datasheet."