Dispersion measurement technique based on the self-seeding laser oscillation of a Fabry–Perot laser diode

✍ Scribed by Ki-Hong Yoon; Jae-Won Song; Hyun Deok Kim

• Publisher: Elsevier Science
• Year: 2007
• Tongue: English
• Weight: 229 KB
• Volume: 273
• Category: Article
• ISSN: 0030-4018
• DOI: 10.1016/j.optcom.2007.01.026

✦ Synopsis

A simple dispersion measurement technique has been proposed and demonstrated by using the self-seeding laser oscillation of a Fabry-Perot laser diode through an optical closed-loop path. When the multi-mode optical pulses emitted from the laser are re-injected into the laser after traversing a fiber-under-test, a single mode laser oscillation occurs through the closed-loop path due to the group velocity difference between the pulses of different wavelengths. We measured the dispersion parameter of the fiber-under-test from the modulation frequency changes required to induce single-mode laser oscillations through the optical closed-loop path. The maximum measurement error was less than 1.5% for the optical fibers as compared with a commercial instrument.