SPF : 1G
SPF+ : 10G
QSFP : 40G
QSPF28 : 100G
QSFP56 : 400G
Optics / Transceiver compatibility
https://apps.juniper.net/hct/category/#catKey=100001&modelType=All&pf=QFX+Series
SRX1500, 10km: SRX-SFP-10GE-SR https://apps.juniper.net/hct/product/#prd=SRX1500