MULTI-CORE OPTICAL FIBER, WAVELENGTH DIVISION MULTIPLEXING COUPLER, AND MULTI-CORE OPTICAL FIBER AMPLIFIER
First Claim
1. A multi-core optical fiber amplifier, comprising:
- a double clad multi-core optical fiber configured to include a plurality of cores, an internal cladding enclosing the plurality of cores, and an external cladding enclosing the internal cladding;
a pumping light source configured to output pumping light;
an optical fiber configured to receive pumping light from the pumping light source; and
a wavelength division multiplexing coupler configured to couple the optical fiber with the double clad multi-core optical fiber to apply the pumping light input to the optical fiber from the pumping light source to the double clad multi-core optical fiber.
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Abstract
The multi-core optical fiber amplifier according to an exemplary embodiment of the present invention having the above configuration includes: a double clad multi-core optical fiber including a plurality of cores, an internal cladding enclosing the plurality of cores, and an external cladding enclosing the internal cladding; a pumping light source outputting pumping light; an optical fiber to which pumping light from the pumping light source is input; and a wavelength division multiplexing coupler coupling the optical fiber with the double clad multi-core optical fiber to apply the pumping light input to the optical fiber from the pumping light source to the double clad multi-core optical fiber.
34 Citations
10 Claims
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1. A multi-core optical fiber amplifier, comprising:
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a double clad multi-core optical fiber configured to include a plurality of cores, an internal cladding enclosing the plurality of cores, and an external cladding enclosing the internal cladding; a pumping light source configured to output pumping light; an optical fiber configured to receive pumping light from the pumping light source; and a wavelength division multiplexing coupler configured to couple the optical fiber with the double clad multi-core optical fiber to apply the pumping light input to the optical fiber from the pumping light source to the double clad multi-core optical fiber. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A multi-core optical fiber, comprising:
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a plurality of cores; an internal cladding enclosing the plurality of cores; and an external cladding enclosing the internal cladding, wherein a refractive index of the core is larger than that of the internal cladding and a refractive index of the internal cladding is larger than that of the external cladding.
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8. A wavelength division multiplexing coupler for an optical fiber, comprising:
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a first area corresponding to a single clad single core optical fiber and including a core area and a cladding area enclosing the core area; and a second area corresponding to a double clad multi-core optical fiber and including a plurality of core areas, an internal cladding area enclosing the plurality of core areas, and an external cladding area enclosing the internal cladding area, wherein a diameter of the core area in the first area is larger than that of the core area in the second area - View Dependent Claims (9, 10)
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Specification