Compact dual polarization coupler for multi-core optical fiber

• Main Authors: DENNIS, PAUL, C., JR, GABRIELLI LORENZO H, PITA RUIZ JOSE L, ROCHA LUIS GONZALO, YANG JUN, KOKABAS SCOTT E
• Format: Patent
• Language: Chinese; English
• Published: 03.10.2023
• Subjects: OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS

An optical fiber coupler (135) for coupling a plurality of cores (160) of a multi-core optical fiber (105) to an integrated photonic device includes a grating array comprising a plurality of polarizing beam splitting gratings (180) arranged in a manner corresponding to the plurality of cores (160) in the multi-core optical fiber (105). The fiber optic coupler (135) also includes first and second mode converters (235, 240) extending from the first and second sides of each of the plurality of polarizing beam splitting gratings (180) to receive first and second polarization modes of the optical signal scattered by the polarizing beam splitting gratings (180). A plurality of waveguides (145-a, 145-b) extend from an end of each of the mode converters (235, 240) to guide a single polarization mode of one of the optical signals. 一种用于将多芯光纤(105)的多个芯(160)耦合至集成光子器件的光纤耦合器(135)，包括光栅阵列，该光栅数组包括以对应于多芯光纤(105)中的多个芯(160)的方式布置的多个偏振分光光栅(180)。光纤耦合器(135)还包括从多个偏振分光光栅(180)的每个偏振分光光栅的第一侧和第二侧延伸的第一模转换器和第二模转换器(235,240)，以接收由偏振分光光栅(180)散射的光