摘要:
Provided are an optical transmission structure having a high degree of flexibility in the design of an optical waveguide and a method for manufacturing the optical transmission structure, and also an optical transmission module. An optical transmission structure includes a main substrate (30), a cladding member (40), and core members (50). The main substrate (30) has a through hole (30a) penetrating therethrough in a thickness direction thereof. The cladding member (40) is disposed inside the through hole (30a) and has a plurality of optical waveguide holes (40a) penetrating therethrough in a thickness direction thereof. The core members (50) are disposed inside the plurality of optical waveguide holes (40a), respectively, and have a refractive index larger than the cladding member (40).
摘要:
Provided are an optical transmission structure having a high degree of flexibility in the design of an optical waveguide and a method for manufacturing the optical transmission structure, and also an optical transmission module. An optical transmission structure includes a main substrate (30), a cladding member (40), and core members (50). The main substrate (30) has a through hole (30a) penetrating therethrough in a thickness direction thereof. The cladding member (40) is disposed inside the through hole (30a) and has a plurality of optical waveguide holes (40a) penetrating therethrough in a thickness direction thereof. The core members (50) are disposed inside the plurality of optical waveguide holes (40a), respectively, and have a refractive index larger than the cladding member (40).
摘要:
An optical transmission body includes a substrate having a through hole penetrating therethrough in a thickness direction thereof; a cladding member at least a part of which is positioned to be filled in the through hole, and which has an optical waveguide hole which is positioned inside the through hole and penetrates through the cladding member in a thickness direction thereof and a guide hole portion which is positioned away from the optical waveguide hole and is concave in the thickness direction; and a core member disposed inside the optical waveguide hole.
摘要:
An optical transmission body includes a substrate having a through hole penetrating therethrough in a thickness direction thereof; a cladding member at least a part of which is positioned to be filled in the through hole, and which has an optical waveguide hole which is positioned inside the through hole and penetrates through the cladding member in a thickness direction thereof and a guide hole portion which is positioned away from the optical waveguide hole and is concave in the thickness direction; and a core member disposed inside the optical waveguide hole.
摘要:
The invention relates to an optical-electrical wiring board (2) and an optical module (1). The optical-electrical wiring board (2) includes a substrate (8), a dielectric layer (11), first conductive layers (16a) and second conductive layers (16b). The dielectric layer (11) includes a first region (B) and a second region (C). The first region (B) constitutes a plurality of light transmission portions (11B). The second region (C) has a plurality of pairs of conductive layers each having an overlap portion (10) in which one of the plurality of second conductive layers (16b) and one of the plurality of first conductive layers (16a) overlap each other when seen through in a laminated direction (a) of the dielectric layer (11) and the substrate (8).
摘要:
The invention relates to an optical-electrical wiring board (2) and an optical module (1). The optical-electrical wiring board (2) includes a substrate (8), a dielectric layer (11), first conductive layers (16a) and second conductive layers (16b). The dielectric layer (11) includes a first region (B) and a second region (C). The first region (B) constitutes a plurality of light transmission portions (11B). The second region (C) has a plurality of pairs of conductive layers each having an overlap portion (10) in which one of the plurality of second conductive layers (16b) and one of the plurality of first conductive layers (16a) overlap each other when seen through in a laminated direction (a) of the dielectric layer (11) and the substrate (8).
摘要:
A wiring board equipped with differential lines which compensate for differences in via lengths to minimize signal deterioration is disclosed. Two conductors are couple to different substrate levels through vias of different lengths. Compensation means are provided to correct for the phase difference caused by the different lengths.
摘要:
The invention is directed to a high frequency semiconductor device housing package comprising: an insulating substrate having on its top surface a high frequency semiconductor device mounting and housing portion; a plurality of wiring conductors delivered from the mounting and housing portion through the under surface of the insulating substrate, to which an electrode of the high frequency semiconductor device is electrically connected; and a plurality of ball-shaped signal terminals and ball-shaped grounding terminals arranged on the under surface of the insulating substrate and electrically connected to the wiring conductor, the ball-shaped grounding terminals being arranged substantially circularly so as to surround the centered ball-shaped signal terminal. This construction achieves efficient transmission of high-frequency signals because of its excellent high frequency characteristics in the ball-shaped terminals. It also excels in easiness of mass production and mounting accuracy.
摘要:
A high frequency semiconductor device housing package comprises a dielectric substrate, an internal signal wiring conductor, an interlayer grounding conductor layer, a signal wiring conductor, a ball-shaped signal terminal mounting pad, and a grounding conductor layer. In the interlayer grounding conductor layer opposed to the signal wiring conductor is provided a conductive layer non-forming portion so as to be located in a region directly above the ball-shaped signal terminal mounting pad. An effective distance from the ball-shaped signal terminal mounting pad to the interlayer grounding conductor layer is made greater than an effective distance from the ball-shaped signal terminal mounting pad to the grounding conductor layer. With this configuration, the parasitic capacitance at the pad is reduced and a high frequency signal is efficiently transmitted.
摘要:
An optical transmission board includes a substrate being provided with a through hole formed in a thickness direction of the substrate so as to penetrate from top to bottom of the substrate; a cladding member at least part of which locates inside the through hole, having an optical waveguide hole being inside the through hole and penetrating the cladding member in the thickness direction thereof, and having an upper surface having a surface roughness smaller than that of an upper surface of the substrate; a core member disposed inside the optical waveguide hole; an electrically conductive body disposed on the upper surface of the cladding member; and an optical element electrically connected to the electrically conductive body, having a light-receiving surface or a light-emitting surface opposed to an upper surface of the core member.