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