Photonic wire microcavity light emitting devices
Patent 5878070 Issued on March 2, 1999. Estimated Expiration Date: 
May 24, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 24, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesFluorescent plastic controlled direction lamp Integrated nonlinear waveguide spectrometer Integrated optical package for coupling optical fibers to devices with asymmetric light beams Whispering mode micro-resonator Integrated optics Optoelectronic integrated circuits and method of fabricating and reducing losses using same Patent #: 5526449 InventorsAssigneeApplicationNo. 653584 filed on 05/24/1996US Classes:372/92, PARTICULAR RESONANT CAVITY372/66, Active media with particular shape372/67, Disc-shaped372/94, Having a ring configuration372/108, Specified output coupling device385/31, Input/output coupler385/32Coupling light through a waveguide bend or loopExaminersPrimary: Bovernick, Rodney B.Assistant: Song, Yisun Attorney, Agent or FirmInternational ClassH01S 003/05AbstractA photonic light emitting device comprising a relatively high refractive index photonic-wire semiconductor waveguide core in the form of an arcuate shape, linear shape and combinations thereof. The waveguide core is formed into a closed loop cavity for a light-emitting device or laser. The waveguide core is surrounded on all transverse sides by relatively low refractive index medium and comprises an active medium having major and minor sides and semiconductor guiding layers proximate the major sides. The active medium and the guiding layers are so dimensioned in a transverse direction relative to the path of light propagation through the core to provide dramatically increased spontaneous-emission coupling efficiency, leaading to low lasing threshold and high intrinsic modulation rates.Other References
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