Optical amplifier and multicore fiber
AssigneeFujitsu Limited
InventorsMasato Nishihara, Takeshi Hoshida
Life of this patent
Estimating the term…
Abstract
An optical amplifier includes a pump light source that outputs pump light, and a multicore fiber that includes at least one pumping core, the pump light being input to the at least one pumping core by coupler, at least two signal light cores doped with an active substance for optical amplification, at least one signal light being input to at least one of the signal light cores, and a cladding, wherein the pump light propagating the at least one pumping core and exciting the active substance in the signal light cores, so as to amplify the at least one signal light propagating through the at least one of the signal light cores.
Claims12
An optical amplifier, comprising:
- a pump light source that outputs pump light;
- and
- a multicore fiber that includes:
- a pumping core, the pump light being input to the pumping core by coupler,
- a first signal light core doped with an active substance for optical amplification, and
- a second signal light core doped with an active substance for optical amplification,
- wherein the pump light propagates in the pumping core and thereby excites the active substance in the first signal light core and the active substance in the second signal light core, so as to optically amplify a signal light propagating through the first signal light core or a signal light propagating through the second signal light core.
A multicore fiber, comprising:
- a pumping core, pump light being input to the pumping core;
- a first signal light core doped with an active substance for optical amplification;
- and
- a second signal light core doped with an active substance for optical amplification,
- wherein the pump light radially propagates in the pumping core and thereby excites the active substance in the first signal light core and the active substance in the second signal light core, so as to optically amplify at least one of a signal light propagating through the first signal light core and a signal light propagating through the second signal light core.
A multicore fiber comprising:
- a first pumping core;
- a first signal light core doped with an active substance for optical amplification;
- a second signal light core doped with an active substance for optical amplification;
- and
- a cladding between the first pumping core and the first signal light core, and between the first pumping core and the second signal light core,
- wherein the first pumping core has a refractive index with respect to a refractive index of the first signal light core, a refractive index of the second signal light core, and a refractive index of the cladding, and the first and second signal light cores are disposed with respect to the first pumping core, so that pump light input to the first pumping core radially propagates in the first pumping core and thereby excites the active substance in the first signal light core and the active substance in the second signal light core, to thereby optically amplify at least one of a signal light propagating through the first signal light core and a signal light propagating through the second signal light core.
Dependencies are inferred from the claim text.