Patent ID: 11899291
Assignee: LUMENTUM TECHNOLOGY UK LIMITED
Field: Optics (Instruments)
Classification: CPC G  H | IPC G

Claim 8:
9. An optoelectronic device comprising:
a first waveguide section with a first optical loss;
a second waveguide section with a second optical loss; and
a biasing apparatus configured to:
determine a range of negative bias voltages for which, when a negative bias is applied to the first waveguide section, an optical loss in the first waveguide section at a required operating wavelength is lower than an optical loss when zero bias is applied to the first waveguide section for the required operating wavelength;
select a negative bias voltage within the range, wherein the negative bias voltage is selected such that, when applied to the first waveguide section, the first optical loss and a difference between the first optical loss and the second optical loss are reduced; and
apply the negative bias voltage across the first waveguide section.