Fiber optic adapter and cassette

1. A dual-layered fiber optic adapter block comprising:

at least one upper receptacle and at least one lower receptacle vertically aligned with the upper receptacle to form a column of receptacles, the column including a center divider that divides the at least one upper receptacle from the at least one lower receptacle, the center divider defining a first pair of latching shoulders for mating with a latch of a connector to be mounted at the upper receptacle of the column, the center divider also defining a second pair of latching shoulders for mating with a latch of a connector to be mounted at the lower receptacle of the column, wherein the first pair of latching shoulders and the second pair of latching shoulders are vertically aligned, wherein the column defines a total height of less than about 0.875 inches.

2. A fiber optic adapter block according to claim 1 , wherein the column defines a total height of less than about 0.75 inches.

3. A fiber optic adapter block according to claim 1 , further comprising a plurality of the columns of vertically aligned upper and lower receptacles.

4. A fiber optic adapter block according to claim 1 , further defining symmetric ports at both the front and rear ends of the fiber optic adapter block for mating similar fiber optic connectors.

5. A fiber optic adapter block according to claim 1 , wherein the adapter block is a unitarily-molded structure.

6. A fiber optic cassette comprising:

a cassette body defining a front end, a rear end, and an interior for routing fibers therein; and

a connection panel at the front end, wherein the connection panel defines a plurality of upper receptacles, a plurality of lower receptacles vertically aligned with the upper receptacles to form columns of receptacles, and a center divider that divides the upper receptacles from the lower receptacles, the center divider defining a first pair of latching shoulders for mating with a latch of a connector to be mounted at the upper receptacle of a given column, the center divider also defining a second pair of latching shoulders for mating with a latch of a connector to be mounted at the lower receptacle of the given column, wherein the connection panel is configured such that the first pair of latching shoulders and the second pair of latching shoulders are vertically aligned, and wherein the connection panel of the fiber optic cassette defines a total height of less than about 0.875 inches; the rear end of the cassette body including connector ports for receiving multi-fiber connectors carrying fibers to be relayed to the connection panel with terminated connectors.

7. A fiber optic cassette according to claim 6 , wherein terminated connectors within the interior of the cassette body are standard format fiber optic connectors that mate with standard format fiber optic connectors coupled to the upper and lower receptacles of the connection panel.

8. A fiber optic cassette according to claim 6 , wherein terminated connectors within the interior of the cassette body are non-conventional fiber optic connectors that mate with standard format fiber optic connectors coupled to the upper and lower receptacles of the connection panel.

9. A fiber optic cassette according to claim 6 , wherein the connection panel defines a total height of less than about 0.75 inches.

10. A fiber optic cassette according to claim 6 , wherein the connection panel is defined by a removable structure that is captured between a base and a cover of the cassette body that are snap-fit together to define the interior.

11. A fiber optic cassette comprising:

a cassette body defining a front end, a rear end, and an interior for routing fibers therein; and

a connection panel at the front end, wherein the connection panel defines a plurality of upper receptacles and a plurality of lower receptacles vertically aligned with the upper receptacles to form columns of receptacles, wherein the connection panel is configured to receive fiber optic connectors having latches that define a top side and a bottom side, the latches being configured to be pivotally flexible in a direction from the top side to the bottom side, wherein the connection panel is configured to orient the fiber optic connectors latched to the upper and lower receptacles of the column such that the top sides of the latches of the fiber optic connectors face and are positioned adjacent each other, and wherein the connection panel of the fiber optic cassette defines a total height of less than about 0.875 inches; the rear end of the cassette body including connector ports for receiving multi-fiber connectors carrying fibers to be relayed to the connection panel with terminated connectors.

12. A fiber optic cassette according to claim 11 , wherein the terminated connectors within the interior of the cassette body are standard format fiber optic connectors that mate with standard format fiber optic connectors coupled to the upper and lower receptacles of the front connection panel.

13. A fiber optic cassette according to claim 11 , wherein terminated connectors within the interior of the cassette body are non-conventional fiber optic connectors that mate with standard format fiber optic connectors coupled to the upper and lower receptacles of the connection panel.

14. A fiber optic cassette according to claim 11 , wherein the connection panel defines a total height of less than about 0.75 inches.

15. A fiber optic cassette according to claim 11 , wherein the connection panel is defined by a removable structure that is captured between a base and a cover of the cassette body that are snap-fit together to define the interior.