According to various embodiments, an optical assembly may include a ferrule element having a fiber guiding portion separated from an in-wall locating feature by an access region, and a lens element positioned opposite access region and aligned with the in-wall locating feature. The optical assembly also includes an optical component coupled to and extending through the fiber guiding portion and the access region such that a proximal end of the optical component is positioned within the in-wall locating feature. The optical component includes a coated portion that is coated with an insulator in positions proximate to the fiber guiding portion and an uncoated portion substantially free of the insulator in positions proximal to the in-wall locating feature. The optical assembly also includes a lens cover coupled to the ferrule element and positioned proximate to the lens element.