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

Claim 0:
1. A test device for testing a distributed feedback laser diode (DFB-LD) device for an optical transceiver of a radio over fiber (RoF) system, comprising:
a current source for inputting a current into the DFB-LD to generate an optical output and a PD current output during testing;
a computer for 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;
a case for subjecting the DFB-LD to a desired temperature during testing;
the computer for applying various functional specification parameters according to an operating condition for a function specification to the DFB-LD device during testing, and
a measuring device for measuring the optical output and the PD current output during testing.