P6711
The Tektronix P6711 is a DC to 250 MHz optical/electrical converter for 500 to 950 nm (cal. @ 850 nm) input wavelengths.
It attaches to a scope or 1103 power supply through a Tekprobe BNC connector.
Sister model P6713 offers 300 MHz bandwidth for 1100 to 1700 nm (cal. @ 1300 nm) input wavelengths.