US5278404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical sub-system utilizing an embedded micro-controller
Assignee: Nokia Bell Labs
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Filing: 1992-07-20
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Granted: 1994-01-11
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Expires: 2012-07-20
Abstract
Abstract An optical sub-system is disclosed which includes an embedded micro-controller for providing continuous monitoring and adjusting of various operating parameters associated with the sub-system. The ability to modify various parameters such as bias voltage, optical signal power, etc., as a function of changes in the environment (e.g., ambient temperature, device age, power supply) results in optimization of the sub-system. The micro-controller is initially programmed during environmental testing in manufacture to provide a memory within the micro-controller which includes the optimal values for a preselected set of operating parameters as a function of various environmental conditions.
Inventors
- 👤 Paul D. Yeates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:42
CPC Classifications
H; H04; H04B; H04B10/00; H04B10/07; H04B10/29; H04B10/291; H04B10/293; H04B10/294; H04B10/2942; H01; H01S; H01S5/00; H01S5/04; H01S5/042; H04B10/50; H01S5/06; H01S5/068; H01S5/06825
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
116 words
An optical sub-system for producing an optical output signal in response to an optical input signal, wherein a plurality of operating parameters included within the optical sub-system may change in value as a function of variations in the optical sub-system environment, the changes resulting in unwanted variations in the optical output signal, wherein the improvement comprises a micro-controller embedded within the optical sub-system and including a memory programmed to include optimized values of operating parameters for preselected sets of environmental conditions, said micro-controller responsive to the plurality of operating parameters for comparing said plurality of operating parameters to the optimized values stored in memory and providing as an output to said sub-system optimized operating parameter values.
Claim 2
Dependent Claim
116 words
An optical sub-system for producing an optical output signal in response to an optical input signal, wherein a plurality of operating parameters included within the optical sub-system may change in value as a function of variations in the optical sub-system environment, the changes resulting in unwanted variations in the optical output signal, wherein the improvement comprises a micro-controller embedded within the optical sub-system and including a memory programmed to include optimized values of operating parameters for preselected sets of environmental conditions, said micro-controller responsive to the plurality of operating parameters for comparing said plurality of operating parameters to the optimized values stored in memory and providing as an output to said sub-system optimized operating parameter values.
Claim 3
Dependent Claim
33 words
An optical sub-system as defined in claim 1 wherein the micro-controller memory comprises a ROM chip which is programmed during an initial test period to include the optimized values of the operating parameters.
Claim 4
Dependent Claim
34 words
An optical sub-system as defined in claim 1 wherein the micro-controller further includes means for overriding the values stored in memory and providing other preselected values of the operating parameters to the optical sub-system.
Claim 5
Dependent Claim
14 words
An optical sub-system as defined in claim 1 wherein the sub-system is a regenerator.
Claim 6
Dependent Claim
17 words
An optical sub-system as defined in claim 1 wherein the sub-system is a doped fiber optical amplifier.
Claim 7
Dependent Claim
15 words
An optical sub-system as defined in claim 1 wherein the sub-system is a laser transmitter.
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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) | 1997-01-10 | 1997-07-12 | 1998-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-01-10 | 2001-07-12 | 2002-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-01-10 | 2005-07-12 | 2006-01-11 | $7700.00 | Window Closed / Lapsed |