US4834491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor laser module of dual in-line package type including coaxial high frequency connector
Assignee: Opnext Japan Inc
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Filing: 1988-06-28
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Granted: 1989-05-30
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Expires: 2008-06-28
Abstract
Abstract A semiconductor laser module containing a semiconductor laser therein is disclosed, in which the insulated conductor of a coaxial-type high-frequency connector fixed to the outer wall suface of a dual in-line package is connected to an airtight terminal mounted on the package and connected electrically with the semiconductor laser in the package. Thus, a high-frequency signal in the giga bit band can be readily applied to the semiconductor laser through the coaxial-type high-frequency connector, without degrading the airtightness of the dual in-line package.
Inventors
- 👤 Satoshi Aoki
- 👤 Atsushi Murata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:51
CPC Classifications
H; H01; H01S; H01S5/00; H01S5/02; H01S5/024; H01S5/02407; H01S5/02415; G; G02; G02B; G02B6/00; G02B6/24; G02B6/42; G02B6/4201; G02B6/4204; H01S5/022; H01S5/0225; H01S5/02251; G02B6/4219; G02B6/4236; G02B6/4245; G02B6/4256; G02B6/4262; G02B6/4265; G02B6/4266; G02B6/4286; H01S5/02208; H01S5/06; H01S5/062; H01S5/06226
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
62 words
A semiconductor laser module of the dual in-line package type comprising: a semiconductor laser disposed within a dual in-line package; an optical fiber coupled optically with the semiconductor laser and extended to the outside of the package; an airtight terminal connected electrically with the semiconductor laser; and a coaxial-type high-frequency connector fixed to the package and connected electrically with the airtight terminal.
Claim 2
Dependent Claim
62 words
A semiconductor laser module of the dual in-line package type comprising: a semiconductor laser disposed within a dual in-line package; an optical fiber coupled optically with the semiconductor laser and extended to the outside of the package; an airtight terminal connected electrically with the semiconductor laser; and a coaxial-type high-frequency connector fixed to the package and connected electrically with the airtight terminal.
Claim 3
Dependent Claim
52 words
A semiconductor laser module of the dual in-line package type according to claim 1, wherein one of a circuit and a transmission line each having a desired impedance is disposed and connected between the coaxial-type high-frequency connector fixed to the dual in-line package and the airtight terminal connected to the semiconductor laser.
Claim 4
Dependent Claim
37 words
A semiconductor laser module of the dual in-line package type according to claim 1, wherein the semiconductor laser is fixedly disposed over an electronic cooling element which is disposed within and fixed to the dual in-line package.
Claim 5
Dependent Claim
106 words
A semiconductor laser module of the dual in-line package type comprising: a stem mounted with a semiconductor laser and a monitoring photodiode; an electronic cooling element fixed to the inner wall surface of a dual in-line package and mounted with the stem; dual in-line terminals of the package connected electrically with the monitoring photodiode and the electronic cooling element; an optical fiber connected optically with the semiconductor laser and extended to the outside of the package; an airtight terminal mounted on the package and connected electrically with the semiconductor laser; and a coaxial-type high-frequency connector fixed to the package and connected electrically with the airtight terminal.
Claim 6
Dependent Claim
106 words
A semiconductor laser module of the dual in-line package type comprising: a stem mounted with a semiconductor laser and a monitoring photodiode; an electronic cooling element fixed to the inner wall surface of a dual in-line package and mounted with the stem; dual in-line terminals of the package connected electrically with the monitoring photodiode and the electronic cooling element; an optical fiber connected optically with the semiconductor laser and extended to the outside of the package; an airtight terminal mounted on the package and connected electrically with the semiconductor laser; and a coaxial-type high-frequency connector fixed to the package and connected electrically with the airtight terminal.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-05-29 | 1992-11-28 | 1993-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-29 | 1996-11-28 | 1997-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-29 | 2000-11-28 | 2001-05-30 | $7700.00 | Window Closed / Lapsed |