Wavelength dividing circuit
Patent 6188819 Issued on February 13, 2001. Estimated Expiration Date: 
March 18, 2019. 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.
March 18, 2019. 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 ReferencesGuided-wave circuit with optical characteristics adjusting plate, method for producing it, and apparatus for producing optical characteristics adjusting plate Patent #: 5940548 InventorsAssigneeApplicationNo. 271824 filed on 03/18/1999US Classes:385/39, Particular coupling structure385/15, WITH OPTICAL COUPLER385/24, Plural (e.g., data bus)385/115OPTICAL FIBER BUNDLEExaminersPrimary: Palmer, Phan T. H.Attorney, Agent or FirmForeign Patent References
International ClassG02B 006/26Foreign Application Priority Data1998-03-20 JPAbstractA wavelength dividing circuit which realizes improved device characteristics and performance, such as a small size, high speed and high transmission efficiency and which lends itself to improved integration degree. A wavelength dividing circuit in which materials of different refractive indices are arrayed periodically, without forming individual waveguides as in conventional AWG, in order to create strong wavelength dispersion characteristics not possible with an ordinary optical crystal to control wavelength deviation. A substrate 1 having atomic mediums 5 buried in a background medium 4 in a two-dimensional triangular array has its both sides sandwiched by a first clad 2 and a second clad 3. Optical signals fall on an incident surface inclined at a certain angle relative to the light incident direction and is radiated from a light outgoing surface 7. The interval between neighboring atomic mediums 5 is designed in meeting with the wavelength of the optical signals, while the thickness of the substrate 1 is designed so that the optical signals are sufficiently confined in the substrate 1 and so that the light proceeding direction is not significantly deviated from the substrate surface.Other References
Field of SearchParticular coupling structurePOLARIZATION WITHOUT MODULATION INTEGRATED OPTICAL CIRCUIT WITH OPTICAL COUPLER Switch (i.e., switching from one terminal to another, not modulation) Plural (e.g., data bus) OPTICAL FIBER BUNDLE Access couplers, power tappers, or power dividers Fiber to thin film devices | |
