公开(公告)号：US20250056708A1

公开(公告)日：2025-02-13

申请号：US18447480

申请日：2023-08-10

Applicant: Nokia Solutions and Networks Oy

Inventor： Cristian Bolle ,  Mark Earnshaw

IPC: H05K1/02

Abstract: An optical module includes a PCB having an electronic component mounted on a first side thereof. A heat sink is located along a second side of the PCB. A thermoelectric cooler (TEC) is disposed in an opening through the PCB and has a surface adjacent the heat sink. A laser is located at another surface of the TEC in a thermal contact therewith. An optical fiber mount is attached to the first side of the PCB to hold an optical fiber end in optical alignment with the laser.

公开(公告)号：US20230324617A1

公开(公告)日：2023-10-12

申请号：US17717537

申请日：2022-04-11

Applicant: Nokia Solutions and Networks Oy

Inventor： Mark Earnshaw

IPC: G02B6/293

CPC classification number: G02B6/29395 ,  G02B6/29322 ,  G02B6/29398 ,  H04B10/2941

Abstract: An optical apparatus, comprising a semiconductor substrate, a dielectric layer located on the semiconductor substrate, wherein a membrane portion of the dielectric layer is located over a cavity in a surface of the semiconductor substrate, a resistive heater located on the membrane portion, the resistive heater being controllable by a current applied to the resistive heater and an etalon optical filter located on the resistive heater and over the cavity, an optical passband of the etalon optical filter being wavelength tunable by the resistive heater. A method of manufacturing the optical apparatus is also disclosed.

公开(公告)号：US11906784B2

公开(公告)日：2024-02-20

申请号：US17717537

申请日：2022-04-11

Applicant: Nokia Solutions and Networks Oy

Inventor： Mark Earnshaw

IPC: G02B6/293 ,  G02B6/12

CPC classification number: G02B6/29395 ,  G02B6/12007 ,  G02B6/29361 ,  G02B6/29398

Abstract: An optical apparatus, comprising a semiconductor substrate, a dielectric layer located on the semiconductor substrate, wherein a membrane portion of the dielectric layer is located over a cavity in a surface of the semiconductor substrate, a resistive heater located on the membrane portion, the resistive heater being controllable by a current applied to the resistive heater and an etalon optical filter located on the resistive heater and over the cavity, an optical passband of the etalon optical filter being wavelength tunable by the resistive heater. A method of manufacturing the optical apparatus is also disclosed.

公开(公告)号：US20230307887A1

公开(公告)日：2023-09-28

申请号：US17701645

申请日：2022-03-22

Applicant: Nokia Solutions and Networks Oy

Inventor： Brian Stern ,  Mark Earnshaw

IPC: H01S5/0687 ,  H01S5/06 ,  H01S5/026

CPC classification number: H01S5/0687 ,  H01S5/0612 ,  H01S5/026 ,  H01S5/0617

Abstract: Apparatus and a method are disclosed for calibrating and tuning a wavelength-tunable semiconductor laser. In an assembly, the wavemeter is integrated with the laser, and plural temperature sensors are coupled to plural, spatially separated functional elements of the wavemeter by thermal conduction. A tuning circuit generates tuning signals for the laser that are responsive to wavemeter output signals and to temperature-indication signals from the plural temperature sensors. Temperature effects on the tuning can be mitigated.