CPC A61B 5/6801 (2013.01) [A61B 5/0075 (2013.01); A61B 5/01 (2013.01); A61B 5/02427 (2013.01); A61B 5/14532 (2013.01); A61B 5/14552 (2013.01); A61B 5/683 (2013.01); G01J 3/4412 (2013.01); G02B 6/12004 (2013.01); G02B 6/12007 (2013.01); A61B 2562/0238 (2013.01); G02B 2006/12061 (2013.01); G02B 2006/12121 (2013.01); G02B 2006/12142 (2013.01)] | 19 Claims |
1. An optical sensing module suitable for wearable devices, the optical sensing module comprising:
a silicon or silicon nitride transmitter photonic integrated circuit (PIC), the transmitter PIC comprising:
a plurality of lasers, each laser of the plurality of lasers providing a laser output at a wavelength that is different from the wavelength of the laser outputs of the other lasers within the plurality of lasers;
an optical manipulation region, the optical manipulation region comprising one or more of: an optical modulator, optical multiplexer (MUX); and additional optical manipulation elements; and
one or more optical sensor module outputs for light originating from the plurality of lasers to exit the optical sensing module;
wherein:
the plurality of lasers comprises one or more hybrid DBR lasers, each hybrid DBR laser having a III-V RSOA gain chip or coupon that is hybrid integrated to the PIC such that an optical mode in the III-V RSOA gain chip or coupon is edge-coupled to one or more waveguides of the PIC; and
wherein each of the lasers of the plurality of lasers is switchable, to switch between an on configuration and an off configuration.
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