Patent US5247592A successfully refreshed from Google Patents.
US5247592A
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Semiconductor optical device and array of the same
Assignee: Opnext Japan Inc
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Filing: 1992-06-03
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Granted: 1993-09-21
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Expires: 2012-06-03
Abstract
Abstract A semiconductor optical device and an optical device array is provided which can be used in an optical logic circuit, photonic switching OEIC, etc. The device includes a light amplifying arrangement provided on a bypass waveguide that connects a plurality of optical waveguides, thereby enabling improvement of the light crosstalk and the light propagation loss. In particular, by virtue of providing a light amplifying means in addition to the light deflecting portion, noise components are not amplified, and, therefore, the SN ratio is markedly increased.
Inventors
- 👤 Hiroaki Inoue
- 👤 Kazuhisa Uomi
- 👤 Koji Ishida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:36
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/29; G02F1/31; G02F1/313; G02F1/3137; G02F1/3138; H; H01; H01S; H01S5/00; H01S5/50; H04; H04Q; H04Q11/00; H04Q11/0001; H04Q11/0005; H04Q2011/0007; H04Q2011/0015; H04Q2011/0037; H04Q2011/0041; H04Q2011/0052
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
142 words
A semiconductor optical device comprising: a substrate; a first optical waveguide disposed on the substrate; a second optical waveguide disposed on the substrate, wherein the first and second optical waveguides intersect to form an X shape, wherein the first optical waveguide includes a first light propagation direction changing portion disposed apart from the intersection of the X shape and the second optical waveguide includes a second light propagation direction changing portion disposed apart from the intersection of the X shape; and a bypass optical waveguide disposed on the substrate, connecting the first optical waveguide at a part adjacent to the first light propagation direction changing portion and the second optical waveguide at a part adjacent to the second light propagation direction changing portion, wherein the bypass optical waveguide includes an optical amplification portion functioning as a light absorbing portion when not excited.
Claim 2
Dependent Claim
142 words
A semiconductor optical device comprising: a substrate; a first optical waveguide disposed on the substrate; a second optical waveguide disposed on the substrate, wherein the first and second optical waveguides intersect to form an X shape, wherein the first optical waveguide includes a first light propagation direction changing portion disposed apart from the intersection of the X shape and the second optical waveguide includes a second light propagation direction changing portion disposed apart from the intersection of the X shape; and a bypass optical waveguide disposed on the substrate, connecting the first optical waveguide at a part adjacent to the first light propagation direction changing portion and the second optical waveguide at a part adjacent to the second light propagation direction changing portion, wherein the bypass optical waveguide includes an optical amplification portion functioning as a light absorbing portion when not excited.
Claim 3
Dependent Claim
36 words
A semiconductor optical device according to claim 1, wherein the operating timing of the first and second light propagation direction changing portions and the operating timing of the optical amplification portion are synchronized with each other.
Claim 4
Dependent Claim
28 words
A semiconductor optical device according to claim 1, further comprising a common electrode activating the first and second light propagation direction changing portions and the optical amplification portion.
Claim 5
Dependent Claim
17 words
A semiconductor optical device according to claim 1, wherein the optical amplification portion is a semiconductor laser.
References Cited (Backward Citations)
US4728167A
Cited
US5044745A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-09-20 | 1997-03-22 | 1997-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-09-20 | 2001-03-22 | 2001-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-09-20 | 2005-03-22 | 2005-09-21 | $7700.00 | Window Closed / Lapsed |