Optical sensor tape

A sensor tape for positioning and securing a noninvasive sensor to a skin of a patient to noninvasively measure physiological parameters of the patient, the sensor tape comprising:

• a first portion at a first end comprising a first width, the first portion configured to position an emitter and a detector of the noninvasive sensor;
• a second portion at a second end comprising a second width, the second width being greater than the first width;
• a transition portion between the first portion and the second portion, the transition portion comprising:
• a first edge extending between the first and second ends along the first and second portions, wherein the first edge is substantially linear between the first and second ends;
• a second edge extending between the first and second ends along the first and second portions, wherein the second edge transitions between the first end and the second end non-linearly such that the transition portion changes from the first width to the second width along the second edge;
• and
• an adhesive surface and a non-adhesive surface on each of the first and second portions.