Stackable adapter housing for opposing MT ferrules

1. A fiber optic adapter comprising:

an adapter housing having a base and a longitudinal axis;

a first pair of opposing retention wings extending transversely upward from the base and a second pair of opposing retention wings extending transversely upward from the base, the first pair of opposing retention wings being spaced apart from the second pair of opposing retention wings along the longitudinal axis, each of the first pair of opposing retention wings and the second pair of opposing retention wings comprising first and second retention wing elements spaced apart from one another on opposite lateral sides of the longitudinal axis;

each retention wing element having a lip protruding laterally inward toward the longitudinal axis;

the first pair of opposing retention wings defining a first channel extending laterally between the respective first and second retention wing elements below the respective lips;

the second pair of opposing retention wings defining a second channel extending laterally between the respective first and second retention wing elements below the respective lips;

a first mechanical transfer ferrule received in the first channel such that the respective lips overlie the first mechanical transfer ferrule to inhibit the first mechanical transfer ferrule from being lifted out of the first channel;

a second mechanical transfer ferrule received in the second channel such that the respective lips overlie the second mechanical transfer ferrule to inhibit the second mechanical transfer ferrule from being lifted out of the second channel; and

wherein the first mechanical transfer ferrule and the second mechanical transfer ferrule are mated;

wherein the mated mechanical transfer ferrules are aligned using a pair of guide pins on the first mechanical transfer ferrule;

wherein a retention spring clipped over the mated mechanical transfer ferrules secures the ferrules with their channel.

2. A fiber optic adapter comprising:

an adapter housing having a top portion and a bottom portion;

formed as part of the top portion are two sets of opposing retention wings along the longitudinal axis of the adapter;

each retention wing has a lip;

each pair of opposing retention wings form a channel;

a first mechanical transfer ferrule is inserted in a first channel and a second mechanical transfer ferrule is inserted in a second channel; and wherein

the first mechanical ferrule and the second mechanical ferrule are mated;

wherein the mated mechanical transfer ferrules are aligned using a pair of guide pins on the first mechanical transfer ferrule;

wherein a retention spring clipped over the mated mechanical transfer ferrules secures the ferrules with their channel.

3. The fiber optic adapter of claim 1 , further comprising an upper portion secured over the retention spring.

4. The fiber optic adapter of claim 3 , wherein the upper portion includes a stopper configured to further prevent movement of mated ferrules along the longitudinal axis.

5. The fiber optic adapter of claim 4 , wherein the upper portion comprises a top wall having a first end portion and a second end portion spaced apart along the longitudinal axis, the stopper comprising a tab extending transversely downward from the first end portion of the top wall.

6. The fiber optic adapter of claim 5 , wherein the top wall has first and second longitudinal edge margins extending longitudinally from the first end portion to the second end portion, the stopper being spaced apart laterally inboard of the first and second longitudinal edge margins such that the upper portion defines a clearance on each lateral side of the stopper for receiving a portion of the retention spring therein.

7. The fiber optic adapter of claim 3 , wherein the upper portion comprises a top wall having a first end portion and a second end portion spaced apart along the longitudinal axis and first and second longitudinal edge margins extending longitudinally from the first end portion to the second end portion, the upper portion further comprising a latch element extending transversely downward from each of the first and second longitudinal edge margins and configured to latch with the adapter housing to retain the upper portion on the adapter housing.

8. The fiber optic adapter of claim 7 , wherein the adapter housing comprises laterally outwardly facing latch recesses and each latch element has a laterally inwardly facing latch hook configured to latch with one or more of the latch recesses.

9. The fiber optic adapter of claim 1 , wherein the adapter housing further comprises a pair of clip arms extending transversely downward from the base.

10. The fiber optic adapter of claim 9 , wherein pair of clip arms are configured to snap into one or more slots of a printed circuit board to secure the adapter housing to the printed circuit board.