Nokia optical transceivers and pluggable optics

Nokia optics carry either a readable designation such as QSFP-100G-SR4-MM850 or an eight-character Alcatel-heritage code such as IPUIBXYDAA. Where the readable form is present it encodes form factor, data rate, reach class and wavelength in that order — SR4 is short-reach four-lane, MM850 is multimode at 850 nanometres. The alphabetic codes carry no readable meaning and must be matched exactly. Where a table row names a platform such as 7750 SR, that indicates the optic is coded for that family rather than universal.

Four things identify an optic without ambiguity: form factor, data rate, reach and wavelength. Give all four, plus the platform and the software release, since Nokia enforces coding at the port. State whether industrial temperature rating is required — it is the field most often omitted and the one that fails an install in a Gulf summer or an unheated African shelter. If you are matching existing optics, the code printed on the module barrel is definitive.

Current-generation SFP28, QSFP28 and QSFP-DD optics remain in production. XFP, CFP and older SFP+ variants are end-of-sale and increasingly surplus-only. Coded compatible modules are available for most platforms where the original is unobtainable.