Patents Assigned to Pacific Fiberoptics, Inc.
  • Patent number: 5953690
    Abstract: An intelligent fiberoptic receiver (500) and methods of manufacturing and operating the same. During calibration procedures for the receiver, the optical-to-electrical conversion device (avalanche photodiode (501) or PIN photodiode) and its supporting control and monitoring circuits in the receiver module are characterized over a defined operating temperature range. Characteristic data and/or curves defining these operational control and monitoring functions over the range of operating conditions (temperature, power supply) are stored in non-volatile memory (526) such as EEPROM. During operation, an embedded microcontroller (520) together with analog to digital converters (532), digital to analog converters and other associated circuitry, dynamically control the operational parameters of the module based on the current operating conditions (temperature, power supply).
    Type: Grant
    Filed: July 1, 1996
    Date of Patent: September 14, 1999
    Assignee: Pacific Fiberoptics, Inc.
    Inventors: Leon M. Lemon, William I. Fletcher, Jeffrey V. King, Steven L. Farnes, Terrell S. Fletcher
  • Patent number: 5812572
    Abstract: Intelligent fiberoptic/laser diode transmitter/controller modules and methods of operating and manufacturing the same are disclosed. During calibration procedures for the modules, a laser diode is characterized over a defined operating temperature range. Characteristic data and/or curves defining the operational characteristics of the laser diode over the range of operating conditions (temperature, power supply) are stored in non-volatile memory such as EEPROM. During operation, an embedded microcontroller together with analog to digital converters, digital to analog converters and other associated circuitry, dynamically control the operational parameters (e.g. modulation and bias current) based on the current operating conditions (temperature, power supply). The operating conditions are used as an index into the non-volatile memory containing operational data tables as well as predicted "end-of-life" data.
    Type: Grant
    Filed: July 1, 1996
    Date of Patent: September 22, 1998
    Assignee: Pacific Fiberoptics, Inc.
    Inventors: Jeffrey V. King, William I. Fletcher, Leon M. Lemon, David D. Olsen