Patent ID: 11966079
Assignee: HITACHI ENERGY LTD
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 8:
9. The spliced optical fiber according to claim 8, wherein the spliced optical fiber is obtainable by a process comprising:
connecting a first and a second polarization-maintaining optical fiber at one of their ends by a splice, utilizing a splicing procedure that guarantees a maximum polarization extinction ratio of the splice of X0;
arranging a protection tube around the spliced optical fiber such that the protection tube surrounds at least an uncoated section of the spliced optical fiber which includes the splice, wherein the protection tube has such a length that an uncoated section of the spliced optical fiber comprising the splice and a coated section of the spliced optical fiber at each end of the uncoated section are arranged inside the protection tube; and
sealing a first and a second end of the protection tube to the spliced optical fiber by a first and a second sealing arrangement, utilizing a sealing procedure that guarantees a maximum polarization extinction ratio of the spliced optical fiber at the first and/or the second sealing arrangement of Xs.