A multi-dimensional optical information detection device based on zero-bias double twisted black arsenic-phosphorus (b-AsP) homojunctions is presented. This device enables simultaneous detection of polarization angle, incident intensity, and wavelength information. The photodetector operates in the mid-infrared (MIR) range and utilizes the photothermoelectric effect for its photoresponse. The device features bipolar and phase-offset polarization photoresponse, allowing for unambiguous detection of polarization angles from 0° to 180°. By directly measuring the photocurrents of the double twisted b-AsP homojunctions under uniform illumination, the device can simultaneously detect polarization angle and incident intensity. The responsivity of the device allows for the retrieval of wavelength information, which is typically difficult to obtain. Additionally, the device exhibits electrically tunable polarization photoresponse, enabling precise polarization angle distinction under low light intensity exposure. The device's responsivity, detectivity, and response speed are approximately 50 mA/W, 1.2×10⁹ cm·Hz⁰.⁵/W, and 20 μs, respectively. By applying a gate field, the responsivity can be enhanced to ~150 mA/W, which is favorable for distinguishing polarization angles more accurately in low light intensity conditions. The device also provides highly accurate image reconstruction of multi-dimensional information, offering a promising platform for compact, miniaturized, and multifunctional photodetectors. The device was demonstrated for simultaneous detection of polarization angle and incident intensity in an imaging application, showing clear contrast and good agreement with pre-set conditions. The device's performance is promising for diverse photonic applications, including environmental monitoring, thermal imaging, medical diagnosis, and free-space communications.A multi-dimensional optical information detection device based on zero-bias double twisted black arsenic-phosphorus (b-AsP) homojunctions is presented. This device enables simultaneous detection of polarization angle, incident intensity, and wavelength information. The photodetector operates in the mid-infrared (MIR) range and utilizes the photothermoelectric effect for its photoresponse. The device features bipolar and phase-offset polarization photoresponse, allowing for unambiguous detection of polarization angles from 0° to 180°. By directly measuring the photocurrents of the double twisted b-AsP homojunctions under uniform illumination, the device can simultaneously detect polarization angle and incident intensity. The responsivity of the device allows for the retrieval of wavelength information, which is typically difficult to obtain. Additionally, the device exhibits electrically tunable polarization photoresponse, enabling precise polarization angle distinction under low light intensity exposure. The device's responsivity, detectivity, and response speed are approximately 50 mA/W, 1.2×10⁹ cm·Hz⁰.⁵/W, and 20 μs, respectively. By applying a gate field, the responsivity can be enhanced to ~150 mA/W, which is favorable for distinguishing polarization angles more accurately in low light intensity conditions. The device also provides highly accurate image reconstruction of multi-dimensional information, offering a promising platform for compact, miniaturized, and multifunctional photodetectors. The device was demonstrated for simultaneous detection of polarization angle and incident intensity in an imaging application, showing clear contrast and good agreement with pre-set conditions. The device's performance is promising for diverse photonic applications, including environmental monitoring, thermal imaging, medical diagnosis, and free-space communications.