1. Different wavelengths

The wavelength of Red VFL is 650nm, and the wavelength of Green VFL is 515nm.

2. Different costs

Because the output of Green VFL is small, the cost of its laser is higher.

3. Different heat dissipation

When the output power is same, the heat dissipation of Green VFL is more large.

4. Different lifespan

Because of different heat dissipation, the lifespan of Green VFL is more short.

5. Different human sensitivity

When the output power is same, the human body is more sensitive to Green VFL.

6. Different transmission distance

The Green VFL has bigger average loss during transferring, its transmission distance is more short.

What more differences can you get? Please contact sales@future-fiber.com