Patents by Inventor Ming-Ching Lo

Ming-Ching Lo has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Highly temperature stable filter for fiberoptic applications and system for altering the wavelength or other characteristics of optical devices
    Patent number: 6269202
    Abstract: The optical thickness of an optical device such as an interference filter or optical isolator is altered by applying stress thereto. This changes the frequency or isolation characteristics of the filter or isolator. The two sides of the device may be clamped to a member having a temperature expansion coefficient which is different from that of the device in order to apply tension or compression to the device in response to temperature changes. In this manner, the shifts in optical characteristics of the device due to temperature change is at least partially cancelled by the shifts in optical characteristics induced by stress applied by the member.
    Type: Grant
    Filed: October 10, 1997
    Date of Patent: July 31, 2001
    Assignee: Dicon Fiberoptics, Inc.
    Inventors: Ho-Shang Lee, Ming-Ching Lo, Brian Chiang