Title :
Smart dynamic wavelength equalizer with on-chip spectrum analyzer
Author :
Schiffer, P.M.J. ; Doerr, C.R. ; Stulz, L.W. ; Cappuzzo, M.A. ; Laskowski, E.J. ; Paunescu, A. ; Gomez, L.T.
Author_Institution :
Lucent Technol. Bell Labs., Holmdel, NJ, USA
Abstract :
A fully automated dynamic wavelength equalizer with fast feedback is presented, consisting of a planar optical circuit made in silica and a minimal amount of secondary elements. An on-chip monitor and a single optical diode serve as a low-cost, fast, built-in optical spectrum analyzer used to feedback control the device. The system is demonstrated by flattening the amplified spontaneous emission spectrum of an erbium-doped fiber amplifier from 4.0 dB to within 0.55 dB peak-to-peak in less than a second.
Keywords :
Mach-Zehnder interferometers; equalisers; integrated optoelectronics; optical communication equipment; optical feedback; optical fibre amplifiers; optical switches; spectral analysers; superradiance; amplified spontaneous emission spectrum; erbium-doped fiber amplifier; fast feedback; feedback control; fully automated dynamic wavelength equalizer; low-cost fast built-in optical spectrum analyzer; on-chip monitor; on-chip spectrum analyzer; planar optical circuit; secondary elements; single optical diode; smart dynamic wavelength equalizer; Diodes; Equalizers; Feedback circuits; Feedback control; Monitoring; Optical devices; Optical feedback; Silicon compounds; Spectral analysis; Stimulated emission;
Journal_Title :
Photonics Technology Letters, IEEE
