[특허]Method and system for controlling operation of an energy conversion device

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F03G-006/00 F24J-002/46 F24J-002/40
출원번호	US-0996181 (2001-11-28)
발명자 / 주소	Davenport, Roger L. Smith, David C.
출원인 / 주소	Science Applications International Corporation
대리인 / 주소	Kilpatrick Stockton LLP
인용정보	피인용 횟수 : 32 인용 특허 : 8

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A method and system is described for controlling a solar collector. A microprocessor receives inputs from one or more sensors in the system and determines the level of operation of an energy conversion device. If the level of operation reaches a predetermined setpoint below a maximum level at which

A method and system is described for controlling a solar collector. A microprocessor receives inputs from one or more sensors in the system and determines the level of operation of an energy conversion device. If the level of operation reaches a predetermined setpoint below a maximum level at which the device is to operate, a variable focus solar concentrator is defocused to reduce energy input into the energy conversion device. When the system cools down and operates at a second predetermined level, lower than the first predetermined level, the concentrator is then refocused to increase the power input to the energy conversion device.

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A method and system is described for controlling a solar collector. A microprocessor receives inputs from one or more sensors in the system and determines the level of operation of an energy conversion device. If the level of operation reaches a predetermined setpoint below a maximum level at which

A method and system is described for controlling a solar collector. A microprocessor receives inputs from one or more sensors in the system and determines the level of operation of an energy conversion device. If the level of operation reaches a predetermined setpoint below a maximum level at which the device is to operate, a variable focus solar concentrator is defocused to reduce energy input into the energy conversion device. When the system cools down and operates at a second predetermined level, lower than the first predetermined level, the concentrator is then refocused to increase the power input to the energy conversion device. of the common waveguide reduces an amount of light reflecting into the amplifier and laser. 4. The method of claim 1, further comprising a waveguide mode adapter to enlarge an optical mode near the output facet, so that it is more closely matched to a mode in an optical fiber. 5. The method of claim 1, wherein laser output is tunable over a tuning range while maintaining a substantially constant output power. 6. The method of claim 1, wherein laser output is tunable over a tuning range of at least 15 nm while maintaining a substantially constant output power. 7. The method of claim 1, wherein the optical signal is generated while alternating a propagation direction of the laser output within the amplifier. 8. The method of claim 1, wherein the optical signal is generated while minimizing back reflections into the laser. 9. The method of claim 1, wherein the optical signal is generated while alternating at least one optical mode in the amplifier. 10. The method of claim 9, wherein altering the optical modes is an adiabatic mode expansion. 11. The method of claim 1, wherein the optical signal is generated while selectively exciting waveguide modes in the amplifier. 12. The method of claim 1, wherein the curved portion of the common waveguide intersects the output facet at an oblique angle. 13. The method of claim 12, wherein both the curved portion of the common waveguide and the oblique angle reduce an amount of light reflecting from the output facet back into the amplifier and laser. 14. A method of generating an optical signal, comprising: providing a diode laser assembly including first and second semiconductor layers in an epitaxial structure, a waveguide formed between the first and second semiconductor layers in the epitaxial structure, and a laser and an amplifier formed in the epitaxial structure, the laser including a gain section and a phase section each being positioned between two grating sections to produce a tunable laser output therefrom, wherein at least a portion of the waveguide is curved to reduce reflections from an output facet; coupling the laser output into the amplifier along the waveguide; propagating the laser output in a tapered section of the waveguide in the amplifier to increase saturated output power; and generating an optical signal from the amplifier in response to the propagated laser output. 15. The method of claim 14, wherein the optical signal is generated while controlling an intensity of the laser output and maintaining a constant laser wavelength. 16. The method of claim 14, wherein the laser output is tunable over a tuning range while maintaining a substantially constant output power. 17. the method of claim 14, wherein the laser output is tunable over a tuning range of at least 15 nm while maintaining a substantially constant output power. 18. The method of claim 14, wherein the optical signal is generated while alternating a propagation direction of the laser output within the amplifier. 19. The method of claim 14, wherein the optical signal is generated while minimizing back reflections into the laser. 20. The method of claim 14, wherein the optical signal is generated while altering at least one optical mode in the amplifier. 21. The method of claim 20, wherein altering the optical modes is an adiabatic mode expansion. 22. The method of claim 14, wherein the optical signal is generated while selectively exciting waveguide modes in the amplifier. 23. The method of claim 14, wherein the curved portion of the waveguide reduces an amount of light reflecting into the amplifier and laser. 24. The method of claim 14, wherein the curved portion of the waveguide intersects the output facet at an oblique angle. 25. The method of claim 24, wherein both the curved portion of the waveguide and the oblique angle reduce an amount of light reflecting from the output facet back into the amplifier and laser. 26. The method of claim 14, further comprising a waveguide mode adapter to enlarge an optical mode near the output facet, so that it is more closely matched to a mode in an optical fiber.

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[미국특허] Method and system for controlling operation of an energy conversion device 원문보기

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