摘要:
An optical fiber has an incident end on which light is incident, an emitting end from which the light is emitted, and an aperture provided in a core located at or near the emitting end. The aperture is formed by irradiating the core with an ultrashort pulsed laser beam having pulse widths of 10−15 seconds to 10−11 seconds.
摘要:
An optical fiber has an incident end on which light is incident, an emitting end from which the light is emitted, and an aperture provided in a core located at or near the emitting end. The aperture is formed by irradiating the core with an ultrashort pulsed laser beam having pulse widths of 10−15 seconds to 10−11 seconds.
摘要:
An optical semiconductor package has a base material that includes a principal surface, an optical semiconductor element that is located on the principal surface of the base material to project or receive light, and an optical transparency sealing layer that seals the optical semiconductor element while covering the principal surface of the base material. An air gap having a shape surrounding an optical axis of the optical semiconductor element is provided in the optical transparency sealing layer such that the light is reflected by an interface of a portion corresponding to an inner circumferential surface of the air gap in an interface formed by the air gap and the optical transparency sealing layer.
摘要:
An optical semiconductor package has a base material that includes a principal surface, an optical semiconductor element that is located on the principal surface of the base material to project or receive light, and an optical transparency sealing layer that seals the optical semiconductor element while covering the principal surface of the base material. An air gap having a shape surrounding an optical axis of the optical semiconductor element is provided in the optical transparency sealing layer such that the light is reflected by an interface of a portion corresponding to an inner circumferential surface of the air gap in an interface formed by the air gap and the optical transparency sealing layer.
摘要:
The insulating layer formation step of forming an insulating layer 24-1 on a base for resin application 20 by applying polymeric material, which has been diluted with a solvent, filled with inorganic filler to the base for resin application and by drying the base for resin application; the circuit formation portion forming step of creating a circuit formation portion and a via hole 25 in insulating layer 24-1 that has been formed in the above described insulating layer formation step by means of a laser treatment; and the circuit formation step of forming a circuit 23-1 by plating the circuit formation portion and via hole 25 that have been created in the above described circuit formation portion forming step are provided and the insulating layer formation step, the circuit formation portion forming step and the circuit formation step are repeated a plurality of times in this order and, thereby, a circuit formation part (multi-layered substrate) is manufactured. Accordingly, a multi-layered circuit, even of more than three layers, having an arbitrary circuit formation can easily be manufactured at a low cost.