Simultaneous Channel and OSNR Monitoring Using a Polarization-Selective Modulator and an LED
Resource
IEEE Photonics Technology Letters 16 (3): 945-947
Journal
IEEE Photonics Technology Letters
Journal Volume
16
Journal Issue
3
Pages
945-947
Date Issued
2004
Author(s)
Abstract
A compact module including a polarization-selective electrooptic modulator and a light-emitting diode (LED) sensor is utilized for optical signal-to-noise-ratio (OSNR) monitoring and channel recognition. The modulator acts as a polarizer and provides signal dithering to improve the detection sensitivity, while the LED is used as a channel sensor. The channel sensor can monitor a wide wavelength range that is rapidly adjustable and can have much relaxed tolerance on temperature control. The combination of a polarization controller/rotator and the polarized modulator can accurately measure the OSNR between 5 and 35 dB with an error less than 0.5 dB.
Subjects
Channel monitoring; Fiber networks; Optical performance monitoring; Optical signal-to-noise-ratio (OSNR) monitoring; Wavelength-division multiplexing (WDM)
SDGs
Other Subjects
Electrooptical devices; Light modulators; Light polarization; Sensitivity analysis; Sensors; Signal detection; Signal to noise ratio; Temperature control; Tuning; Video signal processing; Wavelength division multiplexing; Channel monitoring; Optical performance monitoring; Optical signal to noise ratio (OSNR); Communication channels (information theory)
Type
journal article
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