Dispersion compensation module

• US 6,456,773 B1
• Filed: 04/17/2000
• Issued: 09/24/2002
• Est. Priority Date: 04/26/1999
• Status: Expired due to Fees

• Current Assignee: Ciena Corporation
• Original Assignee: Ciena Corporation
• Inventors: Keys, Curtis
• Primary Examiner(s): Lee, John D.
• Application Number:
  US09/551,131
• Time in Patent Office: 890 Days
• Field of Search: 385/134-136, 385/147
• US Class Current: 385/135
• CPC Class Codes: G02B 6/4453 Cassettes
• CPC Class Codes: G02B 6/4457 Bobbins; Reels
• CPC Class Codes: H04B 10/2525 using dispersion-compensating fibres

Abstract

Consistent with the present invention, a dispersion compensation module is provided which comprises a housing accommodating one or more spools of DCF. Each spool is provided in a respective package, which can be slidably inserted into or removed from the housing along a track provided within the housing. “Jumpers” or relatively short pieces of fiber can be used to interconnect the spools through adapters external to the packages. As a result, spools of DCF can be readily coupled to one another to provide a desired amount of dispersion compensation. Moreover, the adapters are geometrically configured so that connections can be made to the spools without excessively bending fiber interconnecting the DCF and the DCF itself, while permitting the module to conform to fiber optic packaging standards.

Claims

1. An optical device, comprising:

a housing;

a tray removably disposed within said housing;

a segment of dispersion compensating fiber provided in said tray, said segment of dispersion compensating fiber having first and second end portions; and

a fiber-optic adapter coupled to first and second end portions of said segment of dispersion compensating fiber.

2. An optical device according to claim 1, further comprising a handle coupled to said tray, to thereby manually remove said tray from said housing.

3. An optical device according to claim 1, a rail provided in said housing, said tray being slidably disposed on said rail.

4. An optical device according to claim 1, further comprising a spool, said segment of dispersion compensating fiber being wrapped around said spool.

5. An optical device according to claim 1, wherein said tray has a primary surface and a secondary surface, said segment of dispersion compensating fiber being provided on said primary surface of said tray and said secondary surface extending from said primary surface, said adapter being oriented at an angle relative to secondary surface.

6. An optical device in accordance with claim 1, wherein said adapter is recessed within said housing.

7. An optical device comprising:

a first tray;

a first section of dispersion compensating fiber provided on said tray;

a second tray;

a second section of dispersion compensating fiber provided on said tray;

a housing configured to receive said first and second trays, said first and second trays being slidably disposed within said housing; and

a segment of optical fiber coupling said first section of dispersion compensating fiber to said second section of dispersion compensating fiber.

8. An optical device in accordance with claim 7, further comprising a substantially arcuate member provided in said housing, said segment of optical fiber being looped about said substantially arcuate member.

9. An optical device in accordance with claim 8, wherein said substantially arcuate member has a radius which exceeds a minimum bend radius associated with said segment of optical fiber.

10. An optical device in accordance with claim 7, further comprising a first fiber optic adapter coupled to said first tray and a second fiber optic adapter coupled to said second tray, said segment of optical fiber being coupled to said first and second sections of dispersion compensating fiber via said first and second fiber optic adapters, respectively.

11. An optical device in accordance with claim 10, wherein at least one of said first and second fiber optic adapters is recessed within said housing.

12. An optical device in accordance with claim 10, wherein said first tray has a primary surface and a secondary surface, said section of dispersion compensating fiber being provided on said primary surface of said tray and said secondary surface extending from said primary surface, said adapter being oriented at an angle relative to secondary surface.

13. An optical device in accordance with claim 7, further comprising:

a third tray vertically disposed relative to one of said first and second trays;

a third section of dispersion compensating fiber disposed in said tray; and

an additional segment of optical fiber coupling said third section of dispersion compensating fiber to one of said first and second sections of dispersion compensating fiber.

14. An optical device in accordance with claim 7, wherein said housing further comprises a rail, said second tray being configured to slide on said rail within said housing.

15. An optical device in accordance with claim 7, further comprising:

a first handle coupled to said first tray; and

a second handle coupled to said second tray, said first and second handles being configured to slidably remove said first and second trays, respectively, from said housing.