Embedded parametric monitoring of optoelectronic modules
An optoelectronic module for converting and coupling an information-containing electrical signal with an optical fiber including a housing having an electrical input for coupling with an external electrical cable or information system device and for transmitting and receiving information-containing electrical signals over such input, and a fiber optic connector adapted for coupling with an external optical fiber for transmitting and receiving an optical signal; an electro-optic subassembly coupled to the information containing electrical signal and converting it to and/or from a modulated optical signal corresponding to the electrical signal; and parametric storage means disposed in said housing for storing environmental and/or operational data associated with the module.
1. In an opto-electrical module for converting and coupling information-containing signals with an optical fiber, a method of storing operational information about the opto-electrical module for failure analysis comprising:
maintaining a total elapsed time the module has been operating;
sensing parameter of interest values during operation of the module;
during operation of the module, using data compression to store the total elapsed time and the parameter of interest values in a compressed format in a finite nonvolatile memory; and
overriding default settings on the module and setting the total elapsed time to a non-zero value.
2. A method as defined in claim 1 , further comprising pairing each of the parameter of interest values with a corresponding time from the total elapsed time.
3. A method as defined in claim 1 , wherein sensing the parameter of interest values during the operation of the module occurs after every predetermined time interval.
4. A method as defined in claim 1 , further comprising storing error signals received through one of an optical input and an electrical input received at the module.
5. A method as defined in claim 1 , wherein using data compression and storing the total elapsed time and the parameter of interest values in the finite nonvolatile memory during operation of the module comprises using lossless data compression.