7 schematically illustrates an example computing device and an optical device with an on-chip optical isolator, according to various embodiments. 6 is a flow diagram illustrating a method of fabricating a photonic integrated circuit including an on-chip optical isolator, according to various embodiments.įIG. 5 shows additional detail of a portion of an on-chip optical isolator, including positioning of polarization rotators, according to various embodiments.įIG. 4A to 4D schematically illustrate a cross-sectional side view of a photonic integrated circuit having an on-chip optical isolator at various stages of formation, according to some embodiments.įIG. 3 is a diagram of an optical device showing additional detail for an on-chip optical isolator, according to various embodiments.įIGS. 2 schematically illustrates a cross-sectional side view of a photonic integrated circuit having an on-chip optical isolator, according to some embodiments.įIG. 1 is a block diagram of an optoelectronic system incorporated with a photonic integrated circuit having an on-chip optical isolator of the present disclosure, according to various embodiments.įIG. Embodiments are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings.įIG. To facilitate this description, like reference numerals designate like structural elements. The techniques will be readily understood by the following detailed description in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGSĮmbodiments of the photonic integrated circuit with on-chip optical isolator techniques of the present disclosure may overcome these limitations. Light transmitted from silicon SOI photonic systems is typically coupled off-chip in a non-vertical fashion but may also be vertically coupled to optical fibers in a direction orthogonal to the silicon photonic transmitter chip. Silicon waveguides are typically designed with submicron cross-sections, allowing dense integration of active and passive devices to achieve higher speed and lower driving power. In SOI photonic systems, light is typically confined in a wafer (or chip) plane. Optical waveguide-based photonics devices such as lasers, modulators, and detectors are typically fabricated on silicon-on-insulator (SOI) wafers. Silicon photonics is often considered to be one of the most popular and successful technology platforms based on planar photonics circuits for cost effective optoelectronics integration. Unless otherwise indicated herein, the materials described in this section are not prior art to the claims in this application and are not admitted to be prior art by inclusion in this section. The background description provided herein is for the purpose of generally presenting the context of the disclosure. Embodiments of the present disclosure generally relate to the field of optoelectronics and, more particularly, to photonic integrated circuits with on-chip optical isolators such as silicon photonics transmission circuits fabricated on silicon-on-insulator (SOI) wafers.
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