Optoelectronic module
AssigneeSumitomo Electric Industries, Ltd.
InventorsTakeshi Okada, Hiromi Nakanishi, Yoshiki Kuhara
Life of this patent
Estimating the term…
Abstract
A triple resin layered optoelectronic module having an inner fluid or gelled resin having a refractive index which is equal to the refractive index of the fiber/waveguide at a temperature between −40° C. and +85 ° C. for covering the interval between the fiber/waveguide and the LD/PD chip, a medium resin with elasticity for protecting the inner resin, and an outer resin with rigidity for covering and protecting the medium resin, the substrate, the LD/PD chip and the lead frame. A cavity temporally stores the fluid inner resin for preventing the inner resin from flowing away with a help of surface tension.
Claims24
An optoelectronic module comprising:
- a substrate;
- a first optical part provided upon the substrate which is either an optical fiber or a light waveguide;
- a second optical part being fitted upon the substrate and facing the first optical part;
- a cavity bored at an interval region between the first optical part and the second optical part on the substrate;
- an electrical connecting member fitted to the substrate for connecting the second optical part to external circuits;
- a transparent, gelled or fluid inner resin which has a refractive index similar to the refractive index of the first optical part and fills the cavity and the interval region between the first and the second optical parts;
- a medium resin which has elasticity after setting and covers the inner resin and a portion of the first optical part and the second optical part;
- an outer resin which covers the medium resin, the first and second optical parts, the substrate and the electrical connecting member and gives a determined outer shape.
An optoelectronic module comprising:
- a substrate which is a silicon crystal, a ceramic or a resin;
- a first optical part which is either an optical fiber or a light waveguide with an axial line and an end and is provided on the substrate;
- at least one cavity being formed along the axial line on the substrate and following the end of the first optical part;
- a second optical part which is a light emitting device, a photodetecting device or a combination of a light emitting device and a photodetecting device is fitted at an extension of the axial line of the first optical part beyond the cavity on the substrate;
- an electrical connecting member fitted to the substrate for connecting the second optical part to external circuits;
- a transparent, gelled or fluid inner resin which is either a gelled UV-setting silicone resin or a fluid silicone matching oil having a refractive index similar to the refractive index of the first optical part and fills the cavity and an interval between the first and the second optical parts;
- a medium resin which is either a thermosetting silicone resin or a UV-setting acrylate resin having elasticity after setting and covers the inner resin and a portion of the first optical part and the second optical part;
- an outer resin which is one of the epoxy type resins, covers the medium resin, the first and second optical parts, the substrate and the electrical connecting member and gives a determined outer shape.
An optoelectronic module comprising:
- a substrate;
- a first optical part provided upon the substrate which is either an optical fiber or a light waveguide;
- a second optical part being fitted upon the substrate and facing the first optical part;
- an electrical connecting member fitted to the substrate for connecting the second optical part to external circuits;
- a transparent, gelled or fluid inner resin which has a refractive index similar to the refractive index of the first optical part and fills the cavity and the interval region between the first and the second optical parts;
- a medium resin which has elasticity after setting and covers the inner resin and a portion of the first optical part and the second optical part;
- an outer resin which covers the medium resin, the first and second optical parts, the substrate and the electrical connecting member and gives a determined outer shape.
Dependencies are inferred from the claim text.