This paper presents the effect of intraband crosstalk arises in fiber Bragg grating (FBG) and optical circulator (OC) based bidirectional optical cross connects (BOXCs) for bidirectional wavelength division multiplexing (WDM) ring networks (BWRNs). BOXCs using a FBGs and OCs have been considered for bidirectional WDM ring networks. Theoretical analysis is carried out to evaluate the performance of a BOXC in a WDM transmission system in the presence of homodyne crosstalk due to FBGs. We analyzed here two configurations of FBG-based bidirectional optical cross connects: 2 × 2 BOXC and 4 × 4 BOXC for bidirectional WDM ring networks and evaluate the bit-error-rate (BER) and power penalty (PP) of these configurations. It is found that the bit-error-rate and power penalty performances due to linear homodyne crosstalk induced by fiber Bragg gratings are worsen with the increasing number of wavelength channels for both bar and cross states of BOXCs. BER and power penalty are not affected with the position of the wavelength channels in the bar state while in the cross state, if the position of the wavelength channels is increased, the BER and power penalty both are increased.