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US 4,641,916 AGranted
Optical transmission element
AssigneeSiemens Aktiengesellschaft
InventorsUlrich Oestreich, Ernst Mayr
Life of this patent
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Abstract
The optical transmission element (AD) comprises a light waveguide (LW) provided with a cushion layer (PS), said light waveguide being positioned within a hard sheath (HL). A glide layer (GS) is provided between said sheath (HL) and said cushion layer (PS). The sheath (HL) is of a material having a modulus of elasticity greater than 2000 N/mm.sup.2 and a coefficient of thermal expansion less than 0.8.times.10.sup.-4 /.degree.K.
Claims12
An optical transmission element (AD) comprising:
- a fibrous light waveguide (LW);
- a cushion layer (PS) engaging and surrounding said waveguide;
- a hard sheath (HL) surrounding and protecting said waveguide and cushion layer;
- a glide layer (GS) disposed between and engaging each of said sheath (HL) and said cushion layer (PS) for accommodating movement between said sheath (HL) and cushion layer (PS), wherein the physical properties of said sheath include an elastic modulus (E) greater than 2000 N/mm.sup.2 and a coefficient of thermal expansion less than 0.8.times.10.sup.-4 /K.
1 more element
Dependencies are inferred from the claim text.