EP0506438A1
Expired / Lapsed
EP
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Optical semiconductor array module
Assignee: NEC Corp
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Filing: 1992-03-27
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Granted: —
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Expires: 2012-03-27
Abstract
Abstract An array of optical semiconductor devices, an array of lenses and an array of optical fibers are serially arranged in light propagation direction to provide a light axis alignment. At light input ends of the optical fibers, a light shielding plate is positioned. The light shielding plate is provided with light apertures corresponding to light input facets of the optical fibers to decrease leakage light interference between adjacent optical fibers.
Inventors
- 👤 Kazuyoshi Sato
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 14:29
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/42; G02B6/4201; G02B6/4249; G02B6/36; G02B6/38; G02B6/3807; G02B6/3833; G02B6/3834; G02B6/3838; G02B6/3839
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
150 words
An optical semiconductor device array module, comprising: a plurality of optical semiconductor devices arranged in array pattern with a predetermined interval or predetermined intervals in a direction perpendicular to light axes; a plurality of lenses arranged in array pattern with said predetermined interval or intervals to focus lights emitted from said optical semiconductor devices on predetermined points; a plurality of optical fibers arranged in array pattern with said predetermined interval of intervals to be positioned at said predetermined points by light input facets thereof and to be supplied with said lights focused by said lenses; and a light shielding plate having a plurality of light apertures positioned to face said light input facets of said optical fibers; wherein each of said light apertures of said light shielding plate has a predetermined radius, and a central axis common to a central axis of a core of each of said optical fibers.
Claim 2
Dependent Claim
80 words
An optical semiconductor device array module, according to claim 1, wherein: said light shielding plate is in contact with light input ends of said optical fibers; and each of said light apertures meets an equation defined below. R = r₁ + NA·t where R is a radius of said light apertures, r₁ is a radius of cores of said optical fibers, NA is a numerical aperture of said optical fibers, and t is a thickness of said light shielding plate.
Claim 3
Dependent Claim
19 words
An optical semiconductor device array module, according to claim 1, wherein: said light shielding plate is of stainless steel.
Claim 4
Dependent Claim
58 words
An optical semiconductor device array module, according to claim 1, further comprising: first mount for mounting said optical semiconductor devices thereon; second mount for mounting said lenses thereon; and third mount for mounting said optical fibers and said light shielding plate thereon; wherein said first to third mounts are mounted on a bottom plane of a case member.
Claim 5
Dependent Claim
61 words
An optical semiconductor device array module, according to claim 4, further comprising: an alignment sub-mount for mounting said optical fibers and said light shielding plate thereon; wherein said alignment sub-mount is provided on said third mount to be slid thereon, so that a light path length is adjusted between an array of said lenses and an array of said optical fibers.
References Cited (Backward Citations)
EP0141037A2
Cited
EP0183302A1
Cited
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