Optical coupler and optical amplifier
AssigneeKddi Corporation
InventorsYuta Wakayama, Takehiro Tsuritani
Life of this patent
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Abstract
An optical coupler includes N members. A Kth (K is an integer of 1 to N) member includes a MCF including P (P is an integer of N or greater) cores, and a marker disposed at a position closest to a first core, and at least one SCF. A core of the SCF of the Kth member is coupled to a coupled core other than the first core. Cores of the MCF of an Mth (M is an integer of 1 to N−1) member are connected to cores of the MCF of an (M+1)th member. A total number of SCF included in the N members is P. Each of P cores of the MCFs configured through the connection of the N members is connected to a core of one of the SCFs.
Claims10
An optical coupler comprising first to Nth (N is an integer of two or greater) members,
- wherein a Kth (K is an integer of 1 to N) member includes:
- a multicore optical fiber that includes first to Pth (P is an integer of N or greater) cores disposed at regular intervals in a circular shape, and a marker disposed at a position closest to the first core from among the first to Pth cores, and
- at least one single-core optical fiber,
- a core of the single-core optical fiber of the Kth member is coupled to a coupled core that is other than the first core from among the first to Pth cores,
- cores of a multicore optical fiber of an Mth (M is an integer of 1 to N−1) member of the first to Nth members are connected to cores of a multicore optical fiber of an (M+1)th member of the first to Nth members,
- a total number of single-core optical fibers that are included in the first to Nth members is P, and
- each of P cores of the multicore optical fibers configured through the connection of the first to Nth members is connected to a core of one of the P single-core optical fibers included in the first to Nth members.
An optical amplifier that includes an optical coupler, wherein
- the optical coupler comprises first to Nth (N is an integer of two or greater) members, and
- wherein a Kth (K is an integer of 1 to N) member includes:
- a multicore optical fiber that includes first to Pth (P is an integer of N or greater) cores disposed at regular intervals in a circular shape, and a marker disposed at a position closest to the first core from among the first to Pth cores, and
- at least one single-core optical fiber,
- a core of the single-core optical fiber of the Kth member is coupled to a coupled core that is other than the first core from among the first to Pth cores,
- cores of a multicore optical fiber of an Mth (Mis an integer of 1 to N−1) member of the first to Nth members are connected to cores of a multicore optical fiber of an (M+1)th member of the first to Nth members,
- a total number of single-core optical fibers that are included in the first to Nth members is P, and
- each of P cores of the multicore optical fibers configured through the connection of the first to Nth members is connected to a core of one of the P single-core optical fibers included in the first to Nth members, and
- wherein each of the cores of the multicore optical fiber of the Kth member is configured to amplify signal light that propagates through the core using pump light that propagates through the core.
Dependencies are inferred from the claim text.