Title :
Enhanced sensitivity in WDM optical monitoring using a MARS optical chopper
Author :
Giles, R. ; Stulz, L. ; Walker, J. ; Ruel, R.
Author_Institution :
Lucent Technol., Holmdel, NJ, USA
Abstract :
A MARS optical chopper is implemented with lock-in detection to enhance the sensitivity of a 1550-nm band wavelength-division multiplexing (WDM) optical monitor and improve its immunity of 1/f noise and dc drift. The high chopping rate, 1.02 MHz, it ideally suited for rapid-scanning optical monitors, allowing <100 /spl mu/s filter time constants for high-rate data acquisition.
Keywords :
micro-optics; monitoring; optical communication equipment; optical signal detection; optical switches; wavelength division multiplexing; 1.02 MHz; 1/f noise; 1550 nm; DC drift; MARS optical chopper; WDM optical monitor; data acquisition; filter time constant; lock-in signal detection; mechanical antireflective switch; sensitivity; wavelength division multiplexing; Choppers; Mars; Monitoring; Optical attenuators; Optical filters; Optical modulation; Optical noise; Optical receivers; Optical sensors; Wavelength division multiplexing;
Conference_Titel :
Optical Fiber Communication Conference, 1999, and the International Conference on Integrated Optics and Optical Fiber Communication. OFC/IOOC '99. Technical Digest
Conference_Location :
San Diego, CA, USA
Print_ISBN :
1-55752-582-X
DOI :
10.1109/OFC.1999.766400
