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We propose a simple technique to stabilize the optical output intensity of a fiber ring resonator. The electronic feedback circuit system, which consists of two voltage control oscillators, a phase comparator, and a low pass filter, is applied to the fiber ring resonator in order to compensate the optical phase shift in the ring loop. The reference electrical signal determines the operating condition of the fiber ring resonator for the desired optical output signal. The experimental results within the operating range agree well with the analytical results. The simulated performance of the proposed model is also compared with that of other existing models and shows significant improvement over them.

We report a theoretical study on the effect of grating period and loop length of optical DWDM demultiplexer using compound ordinary optical ring resonator with fiber bragg grating. For the results, changing the grating period and optical paths can adjust the center wavelength of pass-band and narrow spacing bandpass peaks (channels).

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