Fiber optic cassette system with reversible cassettes

1. A reversible fiber optic cassette for mounting in a rack comprising a cassette receiving tray, the tray comprising a plurality of cassette engaging features on an upper surface, the cassette comprising:

an even plurality of N duplex pairs of optic fiber receptacles arranged along a front thereof, a multifiber receptacle on a back thereof and 2*N optic fiber segments each between a respective one of said optic fiber receptacles and said multifiber receptacle;

a first set of N discrete port identifiers on a first surface thereof, each of said first set of port identifiers adjacent and identifying respective ones of said duplex pairs of optic fiber receptacles;

a second set of N discrete port identifiers on a second surface opposite said first surface, each of said second set of N port identifiers adjacent and identifying respective ones of said pairs of optic fiber receptacles;

a first tray engaging feature extending from said first surface and configured for engaging with one of the cassette engaging features;

a second tray engaging feature extending from said second surface and configured for engaging with one of the cassette engaging features; and

a release mechanism comprising an actuator for selectively disengaging said tray engaging feature from the engaged one of the cassette engaging features;

wherein said first set of N identifiers is the same as said second set of N identifiers and wherein for M between 1 to N, an M th port identifier of said first set and an (N-M+1) th port identifier of said second set is adjacent an M th one of said duplex pairs of optic fiber receptacles.

2. The reversible fiber optic cassette of claim 1 , wherein the cassette engaging features each comprise a slot and said first and second tray engaging features each comprise a flexible hooked tab.

3. The reversible fiber optic cassette of claim 1 , wherein the tray comprises a raised shoulder along a forward edge thereof, wherein said cassette housing comprises a first shoulder receiving channel portion on said first surface and a second shoulder receiving channel portion on said second surface.

4. The reversible fiber optic cassette of claim 1 , wherein each of said N port identifiers comprises two numbers identifying a respective one of said duplex pairs of optic fiber receptacles and further wherein each of said numbers is positioned adjacent a respective one of said optic fiber receptacles.

5. The reversible fiber optic cassette of claim 1 , wherein said first set of N discrete port identifiers is visible from above when said second tray engaging feature is engaged by one of the cassette engaging features and said second set of N discrete port identifiers is visible from above when said first tray engaging feature is engaged by one of the cassette engaging features.

6. A reversible fiber optic cassette for mounting in a rack comprising a cassette receiving tray, the cassette comprising:

an even plurality of N duplex pairs of optic fiber receptacles arranged along a front thereof, a multifiber receptacle on a back thereof and 2*N optic fiber segments each between a respective one of said optic fiber receptacles and said multifiber receptacle;

a first set of N discrete port identifiers on a first surface thereof, each of said first set of port identifiers adjacent and identifying respective ones of said duplex pairs of optic fiber receptacles;

a second set of N discrete port identifiers on a second surface opposite said first surface, each of said second set of N port identifiers adjacent and identifying respective ones of said pairs of optic fiber receptacles; and

a means for selectively securing one of said first surface and said second surface to the tray;

wherein said first set of N identifiers is the same as said second set of N identifiers and wherein for M between 1 to N, an M th port identifier of said first set and an (N-M+1) th port identifier of said second set is adjacent an M th one of said duplex pairs of optic fiber receptacles.

7. The reversible fiber optic cassette of claim 6 , wherein the tray comprises a plurality of cassette engaging features on an upper surface and said means for selectively securing comprises a second tray engaging feature extending from said second surface and configured for engaging with one of the cassette engaging features and a second tray engaging feature extending from said second surface and configured for engaging with one of the cassette engaging features.

8. The reversible fiber optic cassette of claim 7 , wherein the cassette engaging features each comprise a slot and said first and second tray engaging features each comprise a flexible hooked tab.

9. The reversible fiber optic cassette of claim 6 , wherein the tray comprises a raised shoulder along a forward edge thereof, wherein said cassette housing comprises a first shoulder receiving channel portion on said first surface and a second shoulder receiving channel portion on said second surface.

10. The reversible fiber optic cassette of claim 6 , wherein each of said N port identifiers comprises two numbers identifying a respective one of said duplex pairs of optic fiber receptacles and further wherein each of said numbers is positioned adjacent a respective one of said optic fiber receptacles.

11. The reversible fiber optic cassette of claim 6 , wherein said first set of N discrete port identifiers is visible from above when said second surface is secured to the tray and said second set of N discrete port identifiers is visible from above when said first surface is secured to the tray.