US5661835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical composite module and method of assembling the same
Assignee: Sumitomo Electric Industries Ltd
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Filing: 1996-01-18
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Granted: 1997-08-26
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Expires: 2016-01-18
Abstract
Abstract An optical composite module includes a housing having two opposing side surfaces, a light separating unit disposed in the housing and adapted to separate pumping light and signal light, optical fibers respectively mounted on the opposing side surfaces of the housing to cause the signal light to pass through the light separating unit on a substantially straight line, and a pumping light source unit disposed in the housing and adapted to cause the pumping light to be incident on the light separating unit. This optical composite module can reduce a loss of light and improve the utilization efficiency of pumping light.
Inventors
- 👤 Takashi Kato
- 👤 Hisao Go
- 👤 Toshio Takagi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:19
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/05; H01S3/06; H01S3/063; H01S3/067; H01S3/06704; G; G02; G02B; G02B6/00; G02B6/24; G02B6/42; G02B6/4201; G02B6/4204; G02B6/4207; G02B6/4208; G02B6/4246; H01S5/00; H01S5/02; H01S5/022; H01S5/0225; H01S5/02251; G02B6/4219; G02B6/4236; G02B6/4237; H01S3/06754; H01S5/02208; H01S5/02216; H01S5/023; H01S5/02325
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
78 words
An optical composite module comprising: a housing having two opposing side surfaces; a light separating unit disposed in said housing for separating pumping light and signal light; optical fibers respectively mounted on the opposing side surfaces of said housing to cause the signal light to pass through said light separating unit on a substantially straight line; and a pumping light source unit disposed in said housing for subjecting the pumping light to incident on said light separating unit.
Claim 2
Dependent Claim
78 words
An optical composite module comprising: a housing having two opposing side surfaces; a light separating unit disposed in said housing for separating pumping light and signal light; optical fibers respectively mounted on the opposing side surfaces of said housing to cause the signal light to pass through said light separating unit on a substantially straight line; and a pumping light source unit disposed in said housing for subjecting the pumping light to incident on said light separating unit.
Claim 3
Dependent Claim
80 words
A module according to claim 1, wherein said pumping light source unit is disposed to cause emitted pumping light to be incident in a direction perpendicular to a traveling direction of signal light passing through said light separating unit, and said light separating unit comprises a mirror for reflecting the pumping light incident from said pumping light source unit, and a multiplexer for transmitting the reflected pumping light in an opposite direction to the traveling direction of the signal light.
Claim 4
Dependent Claim
109 words
A module according to claim 1, wherein said pumping light source unit is disposed to cause emitted pumping light to propagate parallel to a traveling direction of signal light passing through said light separating unit, and further comprising a mirror for reflecting the pumping light emitted from said pumping light source unit to cause the light to be incident in a direction perpendicular to said light separating unit, and said light separating unit comprises a mirror for reflecting the pumping light incident from said pumping light source unit, and a multiplexer for transmitting the reflected pumping light in an opposite direction to the traveling direction of the signal light.
Claim 5
Dependent Claim
78 words
A module according to claim 1, wherein said pumping light source unit is disposed with an inclination with respect to a traveling direction of signal light passing through said light separating unit, pumping light emitted from said pumping light source unit is incident on said light separating unit with an inclination, and said light separating unit further comprising a multiplexer for transmitting the incident pumping light in an opposite direction to the traveling direction of the signal light.
Claim 6
Dependent Claim
16 words
A module according to claim 1, wherein said light separating unit further comprising an optical isolator.
Claim 7
Dependent Claim
36 words
A module according to claim 1, wherein said light separating unit further comprising a beam splitter disposed in an optical path of signal light, and a photodiode disposed in a traveling direction of the signal light.
Claim 8
Dependent Claim
31 words
A module according to claim 1, wherein said pumping light source unit comprises a semiconductor laser, a photodiode disposed therebehind, and a temperature controller for adjusting temperature around said semiconductor laser.
Claim 9
Dependent Claim
17 words
A module according to claim 1, wherein said pumping light source unit further comprising an optical isolator.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-08-25 | 2001-02-24 | 2001-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-08-25 | 2005-02-24 | 2005-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-08-25 | 2009-02-24 | 2009-08-26 | $7700.00 | Window Closed / Lapsed |