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

Claim 6:
7. An optical reader device for reading a photonic chip of a removable cartridge, the device comprising:
a scan head;
a plurality of laser sources each configured to emit light having a transverse-magnetic (TM) polarization;
a first plurality of optical fibers, wherein each laser source is coupled to one optical fiber of the first plurality of optical fibers, further wherein the first plurality of optical fibers are polarization maintaining single-mode fibers;
a plurality of optical sensors;
a second plurality of optical fibers, wherein each optical sensor is coupled to one optical fiber of the second plurality of optical fibers, further wherein the second plurality of optical fibers are multimode fibers;
wherein each of the first plurality of optical fibers and the second plurality of optical fibers terminates on the scan head so that an end of each optical fiber of the first and second pluralities of optical fibers are arranged in a line facing a gap; and
a cartridge holder configured to receive the removable cartridge so that the photonic chip is aligned with a polarization axis formed by the scan head so that an end of the photonic chip comprising a plurality of waveguides faces the gap, across from the scan head,
wherein the device is configured to maintain the polarization of the polarization axis in a transverse-magnetic (TM) polarization.