Optical isolator bridge
AssigneeIntel Corporation
InventorAlexander Krichevsky
Life of this patent
Estimating the term…
Abstract
There is disclosed in one example a computing apparatus, including: a fiber-optic transmitter including a laser source; an input waveguide to receive a modulated laser pulse from the laser source; an output waveguide to direct the modulated laser pulse to an external communication element; and an isolator bridge optically coupled to the input waveguide and output waveguide, the isolator bridge including an input lens, an input-side folding prism, an isolator element, an output-side folding prism, and an output lens, wherein an input light pulse through the input lens is to be redirected by the input-side folding prism through the isolator element to the output-side folding prism, and redirected by the output-side folding prism through the output lens.
Claims19
A computing apparatus, comprising:
- a fiber-optic transmitter comprising a laser source;
- an input waveguide to receive a modulated laser pulse from the laser source;
- an output waveguide to direct the modulated laser pulse to an external communication element;
- an isolator bridge optically coupled to the input waveguide and output waveguide, the isolator bridge comprising an input lens, an input-side folding prism, an input-side polarizer, an isolator element, an output-side polarizer, an output-side folding prism, and an output lens, wherein an input light pulse through the input lens is to be redirected by the input-side folding prism through the isolator element to the output-side folding prism, and redirected by the output-side folding prism through the output lens;
- and
- a plurality of input waveguides to optically couple to a plurality of output waveguides, with a single input lens to service the plurality of input waveguides, wherein the input-side and output-side folding prisms redirect light from the waveguides at non-90 degree angles, and wherein the output waveguides are arranged in an order reversed from an order of the input waveguides.
A circuit assembly, comprising:
- an integrated circuit comprising a multi-wavelength laser communication source, a plurality of incoming waveguides, the incoming waveguides to receive laser inputs of different wavelengths, and a plurality of outgoing waveguides paired to the incoming waveguides;
- V-grooves to receive the input and output waveguides, wherein some V-grooves are configured to receive multiple waveguides, and some V-grooves are configured to receive a single waveguide;
- and
- a separately-fabricated optical isolator bridge affixed to the integrated circuit to couple the incoming waveguides to the outgoing waveguides with optical isolation, the isolator bridge comprising at least one incoming-side lens, an incoming-side folding prism, an incoming-side polarizer, an isolator element, an outgoing-side polarizer, an outgoing-side folding prism, at least one outgoing-side lens, wherein an incoming light pulse through the incoming-side lens is to be redirected at an angle by the incoming-side folding prism, through the isolator element to the outgoing-side folding prism, and redirected at an angle by the outgoing-side folding prism through the outgoing-side lens.
An optical isolator bridge assembly, comprising:
- an interface to mechanically and optically couple to a plurality of input-side waveguides and a plurality of output-side waveguides;
- V-grooves to receive the input-side and output-side waveguides, wherein some V-grooves are configured to receive multiple waveguides, and some V-grooves are configured to receive a single waveguide
- M input-side lenses;
- an input-side prism to redirect an input laser pulse at a first angle through an isolator element;
- an input-side polarizer;
- an output-side prism to receive the light pulse from the isolator elements and redirect it at a second angle;
- an output-side polarizer;
- and
- M output-side lenses.
Dependencies are inferred from the claim text.