Granted Patent B2

US 7,044,661 · App. 10/470,328 · Granted May 16, 2006

Abstract

Claims (31)

1. An optical package suitable for use in a moist environment, said assembly comprising:

an optical component;

a housing defining at least a main compartment containing said optical component, and an access route along which ambient moisture must travel to reach said main compartment; and

a desiccant material disposed in the housing to substantially remove any moisture entering said housing, said desiccant being disposed along said access route such that moisture entering said housing contacts said desiccant material before reaching said main compartment.

2. The optical package of claim 1 wherein said housing is elongated with two ends, said access route extending from at least one of said ends to said main compartment.

3. The optical package of claim 1 , wherein said access route is sealed substantially from ambient moisture by an adhesive and said housing defines a partition between the adhesive and the optical component.

4. The optical package of claim 1 , wherein said housing comprises a sealant compartment along said access route, said sealant compartment containing said adhesive.

5. The optical package of claim 4 , wherein said desiccant is between said main compartment and said sealant compartment.

6. The optical package of claim 5 , wherein said desiccant is contained in a desiccant compartment which is partitioned from said main chamber.

7. The optical package of claim 5 , wherein said desiccant is not partitioned from said main compartment.

8. The optical package of claim 7 , wherein said desiccant is dust-resistant.

9. The optical package of claim 7 , wherein said optical component does not have an exposed optical path.

10. The optical package of claim 1 , wherein said desiccant is at least one of P 2 O 5 , Mg(ClO 4 ) 2 , KOH, H 2 SO 4 , NaOH, CaO, CaCL 2 , ZnCl 2 , CuSO 4 , or zeolites.

11. The optical package of claim 10 , wherein said desiccant is zeolite.

12. The optical package of claim 1 , wherein said optical component is at least one of add/drop filters, silica planar waves guides, arrayed wave guide gratings (AWGs), splitters/couplers, attenuators, lasers, photodiodes, detectors or optical amplifiers.

13. An optical component package comprising:

an optical component;

a housing having at least a main compartment containing said optical component, a sealant compartment through which ambient moisture must pass to reach said optical component, and a desiccant compartment disposed between said sealant compartment and said main compartment,

an adhesive contained within said sealant compartment, said adhesive substantially preventing ambient moisture from entering said housing; and

a desiccant contained within said desiccant compartment such that moisture entering said housing contacts said desiccant before reaching said optical component.

14. The optical package of claim 13 , wherein said housing comprises an elongated member containing a number of partitions, a first partition separates said main compartment from said desiccant compartment, a second partition separates said desiccant compartment from said sealant compartment and wherein said elongated member has an end cap on one end, thus, said main compartment is on one said of said first partition, said desiccant compartment is between said first and second partitions, and said sealant compartment is between said second partition and said end cap.

15. The optical package of claim 14 , wherein said elongated member is a tube and said first and second partitions are washers in said tube.

16. The optical package of claim 15 , wherein the interior surface of said tube has ridges upon which at least one washer abuts.

17. A process for manufacturing an optical package, said process comprising:

positioning an optical component in a main compartment of a housing;

disposing a desiccant in said housing such that ambient moisture entering said housing contacts said desiccant before reaching said optical component;

pre-sealing said housing in which a partition is establish to prevent an adhesive used for sealing said housing from entering said main compartment; and

sealing said housing with said adhesive to prevent substantially moisture from entering said housing.

18. The process of claim 17 , further comprising establishing a barrier between said main compartment and said desiccant such that dust from said desiccant cannot enter said main compartment.

19. The process of claim 17 , wherein pre-sealing comprises applying a quick-cure adhesive to gaps to prevent said adhesive from passing.

20. The process of claim 19 , wherein said adhesive has a lower cure rate than said quick-cure adhesive.

Assignments (8)