Optical device and optical module
OwnerSulin YANGinventor
Life of this patent
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Abstract
An optical device (501) is disclosed, including a spatial multiplexer/demultiplexer (520) and an optical splitter (510). The optical splitter (510) is an M:N optical splitter, M is greater than or equal to 2, and N is greater than or equal to M. M is a quantity of common ports of the optical splitter (510), and N is a quantity of drop ports of the optical splitter (510). The spatial multiplexer/demultiplexer (520) includes one common port (521) and M drop ports (522-1 to 522-M). The M drop ports of the spatial multiplexer/demultiplexer (520) are connected to the M common ports of the optical splitter (510). The common port (521) of the spatial multiplexer/demultiplexer (520) has a capability of transmitting optical signals in multiple spatial modes.
Claims17
An optical device, comprising a spatial multiplexer/demultiplexer and an optical splitter, wherein
- the optical splitter is an M:N optical splitter, M is an integer greater than or equal to 2, and N is greater than or equal to M, wherein M is a quantity of common ports of the optical splitter, and N is a quantity of drop ports of the optical splitter;
- and
- the spatial multiplexer/demultiplexer comprises a common port and M drop ports, the M drop ports of the spatial multiplexer/demultiplexer are connected to the M common ports of the optical splitter, and the common port of the spatial multiplexer/demultiplexer has a capability of transmitting optical signals in multiple spatial modes.
A fiber, the fiber comprising a first core, a second core, and a cladding, a diameter of the first core is less than a diameter of the second core, the diameter of the second core is less than a diameter of the cladding, a refractive index of the cladding is less than a refractive index of the second core, the refractive index of the second core is less than a refractive index of the first core, a fundamental-mode optical signal is transmitted in the first core, and a high-order-mode optical signal is transmitted in the second core.
An optical apparatus, the optical apparatus comprising a transmitter optical subassembly (TOSA), at least one receiver optical subassembly (ROSA), a two-core fiber, a laser drive circuit, a received signal processing circuit, and a connector, wherein the two-core fiber comprises a first core, a second core, and a cladding, wherein a diameter of the first core is less than a diameter of the second core, the diameter of the second core is less than a diameter of the cladding, a refractive index of the cladding is less than a refractive index of the second core, the refractive index of the second core is less than a refractive index of the first core, a fundamental-mode optical signal is transmitted in the first core, and a high-order-mode optical signal is transmitted in the second core.
Dependencies are inferred from the claim text.