US4599527A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for stabilizing gain of a photosensitive avalanche member
Assignee: Societe Anonyme de Telecommunications SAT
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Filing: 1983-09-09
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Granted: 1986-07-08
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Expires: 2003-09-09
Abstract
Abstract Gain of a photosensitive avalanche member, such as an avalanche photodiode, is stabilized so that a variation in gain of the photosensitive member in terms of temperature is compensated for by applying to the photosensitive member a bias voltage varying with temperature according to a predetermined relationship. The relationship depends on the variation with temperature in the voltage applied to terminals of at least one diode. The gain stabilizing device comprises a temperature-stabilized voltage source, a dc-dc voltage converter having an adjustable gain for applying a bias voltage to the photosensitive member, and at least one diode series-connected between the supply source and an input of the converter.
Inventors
- 👤 Didier M. Beaudet
- 👤 Pierre Nicole
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:59
CPC Classifications
H; H10; H10F; H10F77/00; H10F77/95; H10F77/953; H10F77/959; Y; Y10; Y10S; Y10S323/00; Y10S323/907
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
58 words
A device for stabilizing gain of a photosensitive avalanche member, comprising supply means for deriving a temperature-stabilized voltage, at least one diode series-connected to the supply means, and voltage converting means for converting a temperature-varying voltage derived from said diode into a bias voltage, said converting means being connected to apply said bias voltage to said photosensitive member.
Claim 2
Independent Claim
58 words
A device for stabilizing gain of a photosensitive avalanche member, comprising supply means for deriving a temperature-stabilized voltage, at least one diode series-connected to the supply means, and voltage converting means for converting a temperature-varying voltage derived from said diode into a bias voltage, said converting means being connected to apply said bias voltage to said photosensitive member.
Claim 3
Dependent Claim
31 words
The device claimed in claim 1 wherein said voltage converting means comprises a dc-dc voltage converter having one input connected to the diode and a resistor connected to a grounded terminal.
Claim 4
Dependent Claim
25 words
The device claimed in claim 2 wherein said voltage converting means comprises a resistor series-connected between said input of said voltage converter and said diode.
Claim 5
Dependent Claim
14 words
The device claimed in claim 2 wherein said voltage converter has an adjustable gain.
Claim 6
Dependent Claim
14 words
The device claimed in claim 3 wherein said voltage converter has an adjustable gain.
Claim 7
Independent Claim
80 words
A device for stabilizing gain of a photosensitive avalanche member, comprising supply means for deriving a temperature-stabilized voltage, at least one diode having a cathode connected to said supply means to be responsive to said temperature-stabilized voltage, a first resistor having a terminal connected to an anode of said diode, a second resistor having a grounded terminal, and voltage converting means connected to other terminals of said first and second resistors for applying a bias voltage to said photosensitive member.
Claim 8
Independent Claim
80 words
A device for stabilizing gain of a photosensitive avalanche member, comprising supply means for deriving a temperature-stabilized voltage, at least one diode having a cathode connected to said supply means to be responsive to said temperature-stabilized voltage, a first resistor having a terminal connected to an anode of said diode, a second resistor having a grounded terminal, and voltage converting means connected to other terminals of said first and second resistors for applying a bias voltage to said photosensitive member.
Claim 9
Independent Claim
69 words
A device for stabilizing gain of a photosensitive avalanche member, comprising supply means for deriving a temperature-stabilized voltage, diode means connected to said supply means to be responsive to said temperature-stabilized voltage for deriving a temperature-varying voltage, and voltage converting means connected to said diode means to respond to said temperature-varying voltage for biasing said photosensitive member with a bias voltage varying as a function of said temperature-varying voltage.
Claim 10
Independent Claim
69 words
A device for stabilizing gain of a photosensitive avalanche member, comprising supply means for deriving a temperature-stabilized voltage, diode means connected to said supply means to be responsive to said temperature-stabilized voltage for deriving a temperature-varying voltage, and voltage converting means connected to said diode means to respond to said temperature-varying voltage for biasing said photosensitive member with a bias voltage varying as a function of said temperature-varying voltage.
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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) | 1989-07-07 | 1990-01-06 | 1990-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-07 | 1994-01-06 | 1994-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-07 | 1998-01-06 | 1998-07-08 | $7700.00 | Window Closed / Lapsed |