US 10270535

Patent Overview — US10270535B1

Title: Linearized optical digital-to-analog modulator

Patent number: US10270535B1 (application US16/234,635; granted 2019-04-23; filed 2018-12-28)

Inventors: Yossef Ehrlichman, Ofer Amrani, Shlomo Ruschin

Assignee: Ramot at Tel Aviv University Ltd. (assignment recorded 2019-01-13)

Priority date: 2007-06-13. Anticipated expiration: 2028-06-12. Status: Active (legal status as listed; the source notes this is an assumption, not a legal conclusion).

Purpose and plain-language scope: The patent concerns an optical digital-to-analog modulator that is "linearized." Per the supplied classification data, it sits at the intersection of optical transmission and digital-to-analog conversion — specifically optical waveguide interferometric modulators (e.g., G02F1/225), optical analog/digital converters (G02F7/00), digital-to-analog converters (H03M1/66), digital intensity/amplitude modulation (H04B10/54, H04B10/541), and radio-over-fiber (H04B10/2575). In plain terms, the claimed subject matter appears directed to converting a digital electrical input into an analog optical output using a modulator, with linearization to improve fidelity. The source's "prior art keywords" are modulator, electrode, digital, electrodes, and optical signal — indicating the device uses multiple electrodes driven by digital signals.

Cite: https://patents.google.com/patent/[US10270535](/patent/US10270535)/en

What the excerpt does not establish: The supplied text contains no claims, no written description, and no drawings text, so the actual claimed scope, the specific linearization technique, electrode arrangement, and embodiments cannot be verified from it. It also does not establish enablement, claim count, or the content of the priority application. The source lists litigation and PTAB entries (including IPR2020-00123, marked "Not Instituted – Procedural") and later family members, but no litigation, ownership-transfer, validity, or prior-art analysis is undertaken here, per instruction. Family continuity listings (e.g., US10461866B2, US11133872B2, US11342998B2, US11716148B2, US12191912B2, US12388533B2, US20250350366A1) are reported as listed, not interpreted.