We proposed a compact and efficient TE-pass polarizer in silicon-on-insulator(SOI) platform, which consist of polarization beam splitters (PBS), polarization rotators (PR) and polarization splitter-rotators (PSR) . The transmission of transverse magnetic(TM) and transverse electric(TE) modes can reach 88.9% and 98.6% at the wavelength of 1550 nm, and the loss is less than 1.6 dB. The PR shows a high polarization conversion efficiency (PCE) of 98.2% within a total device length of about 7.2 um. The device is much smaller than the general level of polarization devices, which can fulfill the polarization control in the integrated optical gyroscope (IOG).
The rapid development of integrated optics provides the possibility of further reducing the volume and weight of fiber optic gyroscope (FOG) by integrating the optical driver module. In this paper, a novel integrated optical transceiver (IOT) for miniaturized three-axis FOG is proposed and simulated. A waveguide structure without cross-propagation or smallbending is presented to replace the coupler groups in traditional FOGs, and then coupled to the optical source and detector to form the IOT. The proposed IOT is promising in the improvement of the reliability of FOG as well as the simplification of the assembly process, showing great significance for the miniaturization of FOG.
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