Title :
Intra-cavity-modulated swept-lasers for "real-time" dispersion measurement
Author :
Set, Sze Y. ; Hsu, Kevin ; Santangelo, Philip J. ; Goh, Chee S. ; Kikuchi, Kazuro
Author_Institution :
Micron Opt. Inc., Atlanta, GA, USA
Abstract :
We have demonstrated a novel intra-cavity-modulated swept-laser (ICM-SL) for real-time dispersion measurement over a broad bandwidth. It is capable of simultaneous measurement of both the amplitude and dispersion at a record scan speed of 22 Hz over 50 nm with an effective sweep rate of 2200 nm/s. Because of the continuous-scan nature of the system, the measurement provides an analog output which is not sampling-point limited. Real-time measurement of amplitude and dispersion spectra could potentially be very useful for fast device characterization, and online monitoring during device fabrication. Furthermore, with a real-time measuring capability, it is also possible to incorporate a feedback process during device fabrication to enhance process flexibility and device performance.
Keywords :
fibre lasers; laser cavity resonators; measurement by laser beam; optical fibre dispersion; optical fibre testing; optical modulation; ring lasers; amplitude; analog output; broad bandwidth; continuous-scan nature; device fabrication; device performance; dispersion; dispersion spectra; effective sweep rate; fast device characterization; feedback process; intra-cavity-modulated swept-laser; process flexibility; real-time dispersion measurement; real-time measurement; real-time measuring capability; record scan speed; sampling-point limited; simultaneous measurement; Dispersion; Erbium-doped fiber lasers; Laser feedback; Optical fiber polarization; Optical filters; RF signals; Radio frequency; Ring lasers; Tunable circuits and devices; Wavelength measurement;
Conference_Titel :
Optical Fiber Communication Conference and Exhibit, 2002. OFC 2002
Print_ISBN :
1-55752-701-6
DOI :
10.1109/OFC.2002.1036344
