Abstract:
A supercontinuum light emitting device comprises an effectively Continuous Wave light source producing light of a given wavelength within a specified bandwidth and a nonlinear fiber optically coupled to the light source. The nonlinear fiber has a plurality of fiber segments with different zero dispersion wavelengths, where each successive fiber segment has a zero dispersion wavelength which is larger than the zero dispersion wavelength of the preceding fiber, and the zero dispersion wavelength of the first fiber segment is within plus or minus 20 nanometers of the given wavelength.
Abstract:
A module for use in a passive optical network including a single coil of erbium and a passive optical splitter, whereby digital and analog signals pass through the module from a central office/head end and a subscriber premise, while only the analog signal passes through the single coil of erbium for signal amplification.
Abstract:
An apparatus for multiple signal amplification in a passive optical network, includes a remotely-pumped, single erbium coil positioned intermediate a central office and a split point in the network, wherein both analog and digital signals transmitted within an erbium coil amplification band from the central office and one or more subscriber premises pass through the erbium coil and are amplified prior to being split at the split point.
Abstract:
Extremely High Frequency (EHF) distributed antenna systems and related components and methods are disclosed. In one embodiment, a base unit for distributing EHF modulated data signals to a RAU(s) is provided. The base unit includes a downlink data source input configured to receive downlink electrical data signal(s) from a data source. The base unit also includes an E-O converter configured to convert downlink electrical data signal(s) into downlink optical data signal(s). The base unit also includes an oscillator configured to generate an electrical carrier signal at a center frequency in the EHF band. The base unit also includes a modulator configured to combine the downlink optical data signal(s) with the electrical carrier signal to form downlink modulated optical signal(s) comprising a downlink optical data signal(s) modulated at the center frequency of the electrical carrier signal. The modulator is further configured to send the downlink modulated optical signal to the RAU(s).
Abstract:
An optical fiber comprising a core having a refractive index profile and a centerline; and a cladding layer surrounding and directly adjacent the core; wherein core includes updoping material and is doped with Aluminum in at least one region of the core, such that either: (a) the average longitudinal acoustic wave velocity within the core is within 0.05% of the longitudinal acoustic wave velocity within the cladding; or (b) the longitudinal acoustic wave velocity in the core changes by at least 0.2%.
Abstract:
An optical fiber comprising a core having a refractive index profile and a centerline; and a cladding layer surrounding and directly adjacent the core; wherein core includes updoping material and is doped with Aluminum in at least one region of the core, such that either: (a) the average longitudinal acoustic wave velocity within the core is within 0.05% of the longitudinal acoustic wave velocity within the cladding; or (b) the longitudinal acoustic wave velocity in the core changes by at least 0.2%.
Abstract:
A supercontinuum light emitting device (100) comprises an effectively CW light source (110) producing light of wavelength 1 within a specified bandwidth and a nonlinear fiber (120) optically coupled to the light source (110). The nonlinear fiber has a plurality of fiber segments (13O i ) with different zero dispersion wavelength o i , where each successive fiber segment has zero dispersion wavelength o i , which is larger than the zero dispersion wavelength of the preceding fiber and the zero dispersion wavelength of the first fiber segment is within ±20 run of 1 .