Abstract: A single-fiber subassembly includes a first photodiode for receiving incident light, a laser diode for transmitting emergent light, and a same-wavelength optical splitter having a positive direction. The splitter includes a first birefringent plate, a half-wave plate, a 45° Faraday rotator, and a second birefringent plate arranged in sequence along and vertical to the positive direction. An included angle between an optical axis of the first plate and the positive direction is ?, where 0°<?<90°; an angle between an e-axis of the half-wave plate and a principal section of the first plate is ?, where ?=22.5° or 67.5°. The incident light passes through the splitter along the positive direction; the emergent light passes through the splitter along a direction opposite to the positive direction; and the emergent light is linearly polarized light whose polarization direction is vertical to the principal section of the first plate.

Abstract: Embodiments of the present invention provide an optical module, including an MT-Ferrule and a photoelectric conversion unit. The MT-Ferrule is configured to connect multiple channels of optical channels outside the optical module with multiple channels of optical channels of the photoelectric conversion unit, and implement coupling and transmission of multiple channels of single-mode optical signals between the two. The photoelectric conversion unit is configured to convert multiple channels of single-mode optical signals input from the MT-Ferrule into multiple channels of electrical signals and output the multiple channels of electrical signals, and generate, driven by multiple channels of input electrical signals, multiple channels of single-mode optical signals and output the multiple channels of single-mode optical signals to the MT-Ferrule.

Abstract: An optical module manufacturing method includes: forming a first waveguide layer and a second waveguide layer on a first substrate and a second substrate respectively, or forming a first waveguide layer and a second waveguide layer on a first surface of a first substrate and a second surface of the first substrate respectively; disposing the first substrate on the second substrate; disposing a filter at an end of the first waveguide layer and the second waveguide layer, so that the filter is aligned with the second waveguide layer; and disposing a prism on the filter, so that a first reflective surface of the prism is aligned with the first waveguide layer, and a second reflective surface is aligned with the second waveguide layer. Embodiments of the present application further disclose an optical module.

Abstract: A single-fiber subassembly includes a first photodiode for receiving incident light, a laser diode for transmitting emergent light, and a same-wavelength optical splitter having a positive direction. The splitter includes a first birefringent plate, a half-wave plate, a 45° Faraday rotator, and a second birefringent plate arranged in sequence along and vertical to the positive direction. An included angle between an optical axis of the first plate and the positive direction is ?, where 0°<?<90°; an angle between an e-axis of the half-wave plate and a principal section of the first plate is ?, where ?=22.5° or 67.5°. The incident light passes through the splitter along the positive direction; the emergent light passes through the splitter along a direction opposite to the positive direction; and the emergent light is linearly polarized light whose polarization direction is vertical to the principal section of the first plate.

Abstract: Embodiments of the present invention provide an optical module, including an MT-Ferrule and a photoelectric conversion unit. The MT-Ferrule is configured to connect multiple channels of optical channels outside the optical module with multiple channels of optical channels of the photoelectric conversion unit, and implement coupling and transmission of multiple channels of single-mode optical signals between the two. The photoelectric conversion unit is configured to convert multiple channels of single-mode optical signals input from the MT-Ferrule into multiple channels of electrical signals and output the multiple channels of electrical signals, and generate, driven by multiple channels of input electrical signals, multiple channels of single-mode optical signals and output the multiple channels of single-mode optical signals to the MT-Ferrule.