MPO Connector, MTP Connector, What's the Difference?
The term MPO stands for Multi-fibre Push On and is a specific interface type. The MPO
interface was developed to enable multi-fibre connectivity for higher density, higher bandwidth
based applications requiring parallel or channel based optics. 12 and 24 fibre versions are
currently used to direct connect into 40GbE and 100GbE transceivers and also used in high
density fibre distribution areas. Higher fibre versions are also available (48, 72 fibre) but their
use and deployment is currently limited.
MTP and MPO connectors feature male and female connector design. Male connectors have
two guide pins and female connectors do not. Both connector types need an adapter to
mate a pair of male and female connectors. MTP is a registered trademark of US Conec.
The MTP design complies with the MPO standard.
The MPO interface is primarily defined by the IEC standard 61754-7 and TIA-604-5 9 (US).
These standards respectively cover the mating capabilities of devices and passive components
when using a multi-fibre connector of this type.
The MTP connector is specifically a brand of MPO interface connector that is owned by
the leading US based optical R&D company US Conec. Like MPO it is based on the MT (mechanical
transfer) ferrule technology which was developed by Nippon Telephone and Telegraph (NTT)
during the 1980s.
The MTP (Mechanical Transfer Push On) connector is widely recognised as the highest
performing MPO connector in the market due to a number of unique and patented mechanical features
that significantly stand out from those of a standard MPO connector. US Conec comments that
the MTP connector is "a high performance MPO connector with multiple engineered product enhancements
to improve optical and mechanical performance when compared to generic MPO connectors."
As an example, some of these key primary enhancements are described below;
• A floating ferrule that aids in accurate alignment and improves performance of mated ferrules under stressed load conditions.
• Elliptical guide pins that allows for better alignment by improving mating guidance and reducing hole wear.
• Removable housing allowing for smoother transition of gender types in the field and easier access to performance testing and re-work of the MT ferrule.
• The MTP connector has a metal pin clamp that centres and guides the push spring.
his feature eliminates lost guide pins, centres the spring force and eliminates damage to fibre cables from the spring.
• The MTP connector spring design maximizes ribbon clearance for twelve fibre and multi-fibre ribbon applications to prevent fibre damage.
• The MTP connector is offered with four standard variations of strain relief boots to meet a wide array of applications.
Available to meet a variety of cable constructions, round, loose micro core oval jacketed,
bare ribbon and short boot options, all of which are ideal for use in space limited applications.
The MTP connector is currently available in 4, 8, 12, 24, and 72 fibre densities for
multimode fibre (50Ám and 62.5Ám core) and 4, 8, 12, and 24 fibre densities for single-mode
fibre, as well as the MTP Elite (low-loss) single-mode connector in both 8 and 12 fibre densities.
It is also important to note that the MTP connector complies with the MPO standard as
outlined in IEC standard 61754-7 and TI-604-5 and is therefore a fully compliant MPO connector
and can interconnect directly with other MPO based infrastructures.