What are the properties of LED and laser transmitters?

LED (Light Emitting Diode) transmitters are characterized by their broad spectral output, lower cost, and simpler design, which makes them suitable for short-distance communication. They typically provide lower power and bandwidth compared to lasers, resulting in less efficient coupling into optical fibers. In contrast, laser transmitters offer a narrow wavelength output, higher power, and greater efficiency, making them ideal for long-distance and high-speed data transmission. However, lasers are generally more expensive and complex to manufacture than LEDs.