Free-Space Optical Communication (FSO)

Wireless Transmission of Information Through Air Using Lasers

• Much more bandwidth than radio-based wireless communication.
• Enables fast, affordable internet to reach rural areas or disaster sites.
• License free.
• Enables communication for defense applications:
  o  Enhanced connectivity
  o  Inherently secure
  o  Improving data interoperability
  o  Combining ISR capability with optical communication

Pump Lasers for Satellite Applications

• Diode lasers for stable optical pumping of solid-state lasers mainly for LEO
• Long lifetime of diodes defines long-term stability and ensures prolonged operation in space.
• High electrical-to-optical efficiency minimizes power consumption
• Low mass + small size are critical for spacecraft payload
• Stringent requirements regarding resistance of the package against:
  o  Vibration
  o  Temperature range + changes
  o  Radiation

BTF14 Single Mode

TO220 Multi Mode