Patent ID: 11949453
Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. A test method of testing a distributed feedback laser diode (DFB-LD) device for an optical transceiver of a radio over fiber (RoF) system, the test method comprising:
identifying the DFB-LD device; and
inputting a current into the DFB-LD to generate an optical output and a PD current output during testing;
applying maximum and minimum limiting ratings for a plurality of parameters to the DFB-LD device during testing, wherein the parameters are applied one at a time while all other parameters are kept in a normal performance range for a preset period of time and no fatal damage to the DFD-LD occurs during the preset period of time;
subjecting the DFB-LD to a desired temperature during testing;
applying various functional specification parameters according to an operating condition for a function specification to the DFB-LD device during testing, and
measuring the optical output and the PD current output during testing.