Integrated wavelength locker
AssigneeJuniper Networks, Inc.
InventorsJohn Parker, Jared Bauters, Jonathan Edgar Roth, Erik Norberg, Gregory Alan Fish
Life of this patent
Estimating the term…
Abstract
Described are various configurations of integrated wavelength lockers including asymmetric Mach-Zehnder interferometers (AMZIs) and associated detectors. Various embodiments provide improved wavelength-locking accuracy by using an active tuning element in the AMZI to achieve an operational position with high locking sensitivity, a coherent receiver to reduce the frequency-dependence of the locking sensitivity, and/or a temperature sensor and/or strain gauge to computationally correct for the effect of temperature or strain changes.
Claims20
A method of manufacturing an integrated wavelength locker module, the method comprising:
- on a semiconductor substrate, creating a PIC comprising a tunable light source and a wavelength locker, the wavelength locker comprising an AMZI with two waveguide arms and at least two photodetectors for measuring at least two respective optical interference signals at an output of the AMZI;
- and
- depositing metals near the AMZI to form a strain gauge and a temperature sensor.
Dependencies are inferred from the claim text.