Part Number: 161E01 (Mode coupler)Part Number: 161E-1 (Mode coupler)Part Number: 161E-2 (Mode coupler)Part Number: 161E-2A (Mode coupler)Part Number: 522-4219-001 (Mode coupler)Part Number: 729-6255-001 (Mode coupler)Part Number: 792-6255-002 (Mode coupler)Part Number: 792-6255-003 (Mode coupler)Part Number: 792-6255-004 (Mode coupler)Part Number: 7926265001 (Mode coupler)Part Number: 792-6555-001 (Mode coupler)