THREE-LAYER THIN-COATED FIBER HAVING IMPROVED DAMAGE RESISTANCE
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United States of America
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Nov 28, 2024
app pub date -
May 13, 2024
filing date -
May 13, 2024
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Abstract
An optical fiber includes a glass core, a glass cladding surrounding and in direct contact with the glass core, and a coating surrounding and in direct contact with the glass cladding. The coating includes three layers, a first high-modulus coating layer having a Young's modulus greater than 500 MPa, a second high-modulus coating layer having a Young's modulus greater than 500 MPa, and a low-modulus coating layer having a Young's modulus between about 0.20 MPa and 5 MPa. The coating may have the first high-modulus coating layer as the inner layer, the low-modulus coating layer as the intermediate layer, and the second high-modulus coating layer as the outer layer. Alternatively, the coating may have the low-modulus coating layer as the inner layer, first high-modulus coating layer as the intermediate layer, and the second high-modulus coating layer as the outer layer.
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