US 2026/0121746 A1 · HOLLOW CORE FIBER-BASED LINE-SYSTEM WITH OUT-OF-BAND OPTICAL SUPERVISORY CHANNEL

Abstract

Systems and methods are provided for implementing a hollow core fiber-based line-system with an out-of-band optical supervisory channel. A first transponder, located at a first location, transmits optical data traffic at a first wavelength range to a second transponder, at a second location, over at least one hollow core fiber (“HCF”) cable communicatively coupling the first and second transponders over a fiber path distance that is at least 60 kilometers. The first transponder further transmits an optical supervisory channel (“OSC”) signal at a second wavelength to the second transponder over the at least one HCF cable. The OSC signal corresponds to diagnostic data associated with transmission of the optical data signal and/or associated with operation of a system including the first and second transponders. The second wavelength is separate from the first wavelength range by at least a threshold wavelength separation.

Claims19

Dependent claims

A hollow core fiber-based line system with an out-of-band optical supervisory channel, the hollow core fiber-based line system comprising:

a first transponder located at a first location, the first transponder transmitting optical data traffic at a first wavelength range and transmitting an optical supervisory channel (“OSC”) signal at a second wavelength, the OSC signal carrying data signals corresponding to diagnostic data associated with transmission of the optical data traffic;
a second transponder located at a second location that is geographically separated from the first location;
and
at least one hollow core fiber (“HCF”) cable communicatively coupling the second transponder to the first transponder over a first fiber path distance that is at least 60 kilometers, the at least one HCF cable carrying the optical data traffic and the OSC signal between the first and second transponders, the at least one HCF cable having a membrane thickness of nested tubes that cause at least one anti-resonant window at the first wavelength range and the second wavelength.

1 more element

A computer-implemented method for implementing a hollow core fiber-based line-system with an out-of-band optical supervisory channel, the method comprising:

receiving, by a first transponder of an optical line system (“OLS”), a first optical data signal, the first transponder being located at a first location;
transmitting, by the first transponder, a second optical data signal to a second transponder at a first wavelength range within a first optical wavelength transmission band over at least one hollow core fiber (“HCF”) cable communicatively coupling the second transponder to the first transponder over a first fiber path distance that is at least 60 kilometers, the second optical data signal corresponding to the first optical data signal;
and
transmitting, by the first transponder, an optical supervisory channel (“OSC”) signal to the second transponder at a second wavelength within a second optical wavelength transmission band over the at least one HCF cable communicatively coupling the second transponder to the first transponder, the OSC signal corresponding to diagnostic data associated with operation of the OLS, wherein the first and second wavelengths each corresponds to an anti-resonant window that lies between two adjacent resonant windows, wherein each resonant window corresponds to a wavelength of light that couples with a material of the at least one HCF cable and each anti-resonant window corresponds to a wavelength of light that propagates along a hollow core portion of the at least one HCF cable without coupling with the material of the at least one HCF cable.

1 more element

Dependencies are inferred from the claim text.

Hollow core fiber-based line-system with out-of-band optical supervisory channel

Life of this patent

Hollow core fiber-based line-system with out-of-band optical supervisory channel

Life of this patent

Abstract

Claims19