公开(公告)号：US20230170991A1

公开(公告)日：2023-06-01

申请号：US17539275

申请日：2021-12-01

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Hyunmin Jeong ,  Sai Rahul Chalamalasetti ,  Marco Fiorentino ,  Peter Jin Rhim

IPC: H04B10/079

CPC classification number: H04B10/07955

Abstract: Examples described herein relate to a method for synchronizing a wavelength of light in an optical device. In some examples, a heater voltage may be predicted for a heater disposed adjacent to the optical device in a photonic chip. The predicted heater voltage may be applied to the heater to cause a change in the wavelength of the light inside the optical device. In response to applying the heater voltage, an optical power inside the optical device may be measured. Further, a check may be performed to determine whether the measured optical power is a peak optical power. If it is determined that measured optical power is the peak optical power, the application of the predicted heater voltage to the heater may be continued.

公开(公告)号：US11923899B2

公开(公告)日：2024-03-05

申请号：US17539275

申请日：2021-12-01

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Hyunmin Jeong ,  Sai Rahul Chalamalasetti ,  Marco Fiorentino ,  Peter Jin Rhim

IPC: H04B10/079

CPC classification number: H04B10/07955

Abstract: Examples described herein relate to a method for synchronizing a wavelength of light in an optical device. In some examples, a heater voltage may be predicted for a heater disposed adjacent to the optical device in a photonic chip. The predicted heater voltage may be applied to the heater to cause a change in the wavelength of the light inside the optical device. In response to applying the heater voltage, an optical power inside the optical device may be measured. Further, a check may be performed to determine whether the measured optical power is a peak optical power. If it is determined that measured optical power is the peak optical power, the application of the predicted heater voltage to the heater may be continued.

公开(公告)号：US11115130B1

公开(公告)日：2021-09-07

申请号：US16925202

申请日：2020-07-09

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Tsung Ching Huang ,  Jinsung Youn ,  Peter Jin Rhim ,  Marco Fiorentino

IPC: H04J14/02 ,  H04B10/69 ,  H04B10/079 ,  H03M1/66 ,  H03M1/12

Abstract: Techniques and circuitry for wavelength monitor and control are disclosed herein. The disclosed wavelength monitor and control circuitry and techniques are designed to realize a multi-channel DWDM optical link by using a photonic receiver that dynamically adjusts resonant wavelengths of the microring drop filter (MDF), as needed. The wavelength monitor and control circuitry can monitor and control the resonant wavelengths of multiple MDFs for a DWDM silicon photonics receiver with minimum power and area overhead. In an embodiment, circuitry for an optical receiver comprises an MDF having resonant wavelength for multiple DWDM channels, and circuitry to control and monitor the resonant wavelength of the MDF in real-time and in manner that compensates for deviation between actual resonant wavelength of the MDF and the incident optical wavelength of the MDF.