Claims
- 1. A dispersion compensating fiber, comprising:
a segmented core having a refractive index profile and a central core segment with a Δ1% of greater than 2.0%; a clad layer surrounding and in contact with the core and having a refractive index profile; and wherein the refractive index profiles are selected to provide: total dispersion at 1550 nm of less than −177 ps/nm/km; total dispersion slope at a wavelength of 1550 nm of less than or equal to about −2.0 ps/nm2/km; and a kappa value, defined as the total dispersion at 1550 nm divided by the dispersion slope at 1550 nm, of greater than or equal to 67 nm.
- 2. The fiber of claim 1 further comprising an effective area at 1550 nm of less than or equal to 12.0 μm2.
- 3. The fiber of claim 1 wherein the total dispersion at 1550 nm is greater than about −222.0 ps/nm/km.
- 4. The fiber of claim 1 wherein the total dispersion at 1550 nm is within the range of from about −177.0 ps/nm/km to about −222.0 ps/nm/km.
- 5. The fiber of claim 1 wherein the total dispersion slope at 1550 nm is less than or equal to −3.20 ps/nm2/km.
- 6. The fiber of claim 1 wherein the total dispersion slope at 1550 nm is within the range of from −2.0 ps/nm2/km to about −3.3 ps/nm2/km.
- 7. The fiber of claim 1 wherein the wherein the kappa value at 1550 nm is greater than or equal to 87.0 nm.
- 8. The fiber of claim 1 wherein the wherein the kappa value at 1550 nm is within the range of from 67.0 nm to 87.0 mn.
- 9. The fiber of claim 1 wherein the effective area at 1550 nm is less than or equal to 10.4 μm2.
- 10. The fiber of claim 1 wherein the segmented core includes a central core segment having a positive relative refractive index percent of less than or equal to about 2.7%.
- 11. The fiber of claim 10 wherein the central core segment has an outer radius of within the range of from 1.2 μm to 1.5 μm.
- 12. The fiber of claim 1 wherein the segmented core includes a moat segment surrounding and in contact with the central core segment the moat segment having a relative refractive index percent of greater than or equal to about −0.9%.
- 13. The fiber of claim 12 wherein the moat segment has a width of within the range of from 3.0 μm to 3.7 μm.
- 14. The fiber of claim 12 wherein the segmented core segment includes a ring segment surrounding an in contact with the moat segment and having a relative refractive index percent of within the range of from 0.5% to 0.8%.
- 15. The fiber of claim 14 wherein the ring segment has a width of within the range of from 1.5 μm to 1.7 μm.
- 16. The fiber of claim 15 wherein the width of the ring segment has a center point located within the range of from 5.8 μm to 6.3 μm.
- 17. An optical communication system, comprising:
an optical signal transmitter; an optical signal receiver; a transmission fiber in optical communication with the transmitter and the receiver, and having positive dispersion and positive dispersion slope; and the dispersion compensating fiber as set forth in claim 1 in optical communication with the transmission fiber.
- 18. The optical communication system of claim 17 wherein a residual dispersion amplitude of the system over a wavelength range from 1550 to 1610 nm is less than 0.15 ps/nm/km.
- 19. The optical communication system of claim 17 wherein a residual dispersion amplitude of the system over a wavelength range from 1570 to 1620 nm is less than 0.1 ps/nm/km.
- 20. The optical communication system of claim 17 wherein the transmission fiber has a dispersion between about 3.2 and 5.2 ps/nm/km at 1550 nm, and a dispersion slope of between 0.063 and 0.107 ps/nm2/km at 1550 nm.
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application claims the benefit of, and priority to U.S. Provisional Application Serial No. 60/458,046 filed on Mar. 27, 2003.
Provisional Applications (1)
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Number |
Date |
Country |
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60458046 |
Mar 2003 |
US |