HyperLight Corporation

A singulated thin film lithium containing (TFLC) photonics device, as well as a method and system for singulating the device are described. The TFLC photonics device includes a device layer and a silicon substrate. The device layer includes a TFLC layer having a depth. The device layer also has a first sawn edge. The silicon substrate has a second sawn edge and includes an upper portion and a lower portion. The upper portion has the second sawn edge that is mutually aligned with the first sawn edge. The upper portion overhangs the lower portion.

A photonics device including a waveguide and an index smoothing structure is described. The waveguide is configured to carry an optical signal and includes a thin film lithium-containing electro-optic (TFLCEO) material. The waveguide has a first portion, a transition portion, and a second portion. The optical signal has a first mode in the first portion and a second mode in the second portion. The transition portion transfers the optical signal between the first portion and the second portion and transitions between the first mode and the second mode. The index smoothing structure corresponds to the transition portion. The index smoothing structure is configured to transition a first effective index of refraction for the first mode to a second effective index of refraction for the second mode. The index smoothing structure having an intermediate effective index of refraction.

An optical modulator that uses adiabatic tapers to change the width of the waveguides between multimode waveguides and single mode waveguides on a low-loss, e.g. thin-film lithium niobate, electro-optic platform. The architecture enables the utilization of the fundamental mode of multimode wide optical waveguides that have lower optical propagation loss without sacrificing the benefit of the signal integrity and ease of control of single mode operation.

An interface for an optical modulator and the optical modulator are described. The interface includes first and second differential line pairs. The first differential line pair has a first negative line and a first positive line arranged on opposing sides of a first waveguide. The first negative line is on a distal side of the first waveguide relative to a second waveguide. The first positive line is on a proximal side of the first waveguide relative to the second waveguide. The second differential line pair has a second negative line and a second positive line arranged on opposing sides of the second waveguide. The second negative line is on a distal side of the second waveguide relative to the first waveguide. The second positive line is on a proximal side of the second waveguide relative to the first waveguide. The first and second waveguides each include lithium niobate and/or lithium tantalate.

An electro-optic device is described. The electro-optic device includes an electro-optic component implemented on an electro-optic material having a slab and a ridge portion. The electro-optic component includes a first portion of the slab and a portion of the ridge portion. The first portion of the slab has a first height. The ridge portion has a second height greater than the first height. A passive functionality component is implemented on a second portion of the slab and is optically coupled with the electro-optic component.

A transceiver including an electronics integrated circuit (EIC), a photonics receiver integrated circuit (photonics RIC), a photonics transmitter integrated circuit (photonics TIC), and an interposer. The photonics RIC and TIC are each electrically coupled with the EIC. The photonics TIC is separate from the photonics RIC and includes at least one optical structure having a thin film lithium-containing (TFLC) electro-optic material. The interposer is coupled with the EIC, the photonics RIC, and the photonics TIC. The interposer is configured to route at least one of electrical or optical signals between at least two of the photonics RIC, the photonics TIC, or the EIC.

An electro-optic device including a first waveguide, a second waveguide, and electrodes is described. The first waveguide includes a first thin film lithium-containing (TFLC) electro-optic material and carries a first optical signal. The second waveguide includes a second TFLC electro-optic material and carries a second optical signal. The electrodes include a differential electrode pair proximate to a portion of the first waveguide and to a portion of the second waveguide. The differential electrode pair is configured to provide a first modulation to the first optical signal and a second modulation to the second optical signal. A first magnitude of the first modulation is different from a second magnitude of the second modulation such that the electro-optic device has an engineered chirp.

A photonics device is described. The photonics device includes a waveguide and an electrode. The waveguide configured to transmit an optical signal having a wavelength less than 1100 nanometers and is a single mode waveguide. The waveguide includes electro-optic material(s). The electrode is proximate to a portion of the waveguide and configured to carry an electrode signal for modulating the optical signal. The photonics device is configured to be coupled with at least one multimode fiber. The multimode fiber(s) is configured to transmit a plurality of modes.

An electro-optic device is described. The electro-optic device includes a ridge waveguide and a channel waveguide. The ridge waveguide includes a first portion of at least one electro-optic material. The first portion of the electro-optic material(s) includes a slab and a ridge on the slab. The ridge has a ridge height. The slab has a slab height less than the ridge height. The channel waveguide is optically coupled with the ridge waveguide and includes a second portion of the electro-optic material(s). The channel waveguide has a channel height less than the slab height.

An electro-optic device is described. The electro-optic device includes at least one optical material having an electro-optic effect. Further, the optical material(s) include lithium. The optical material(s) have a slab and a ridge waveguide. The slab has a top surface. The slab includes free surfaces. Each of the free surfaces is at a nonzero angle from the top surface of the slab and mitigates stress in the slab.