Patent ID: 11940454
Assignee: ASPIDA DX INC.
Field: Measurement (Instruments)
Classification: CPC G  A | IPC G

Claim 0:
1. A method of reading optical signals from a photonic chip of a removable cartridge in an optical reader, the method comprising:
aligning a scan head of the optical reader with the chip so that a laser source, a plurality of fibers, and an optical sensor of the scan head are aligned along a polarization axis with the chip;
maintaining a polarization of the polarization axis in a transverse-magnetic (TM) polarization; and
emitting one or more beams of light from the laser source, through the plurality of fibers and into an edge of the photonic chip in the TM polarization; and
detecting, in the optical sensor, TM polarized light from one or more waveguides within the chip when the one or more beams of light interact with an analyte molecule on the chip.