Your search for "hpe xfp to sfp" revealed the following:
OE Solutions RCP02SX1-S51 155 Mbps 1511nm OC3 120Km SFP Transceiver
SKU: NSB-0422
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Fujitsu FC95731410 10GB BASE-LR 1310nm Transceiver XFP
SKU: NSB-1165
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Fiberstore SFP-10G-T 10GB BASE-T MultiRate Optical SFP+ Transceiver
SKU: NSH-9001
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Third Party Cisco Compatible GLC-FE-100FX-RGD 100Mbps BASE-FX MMF LC SFP
SKU: NSN-0919
Condition: New
Shipping: Overnight Options
Warranty: 365 days
HPE C5K-4F-126T-F Nimble Storage CS5000 w/ 126TB Hard Drive Capacity
SKU: NSH-3290
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Proline SFP-H25G-CU2M-PRO 2m 25GB SFP28 Direct Attach Copper Cable
SKU: NSB-1080
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Cisco DWDM-XFP-38.98 10GB BASE-DWDM 1538.98nm SMF XFP Transceiver
SKU: NSH-3794
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Juniper XFP-10GE-S 10GB BASE-SR 850nm Short Reach MMF XFP Transceiver
SKU: NSB-7075
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Fortinet FN-TRAN-SFP+SR 10GB BASE-SR 850nm MMF LC SFP+ Transceiver
SKU: NSB-1542
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Cisco DWDM-XFP-42.94 10GB BASE-DWDM 1542.94nm SMF XFP Transceiver
SKU: NSH-7233
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days