Transmitter devices having bridge structures

A method of manufacturing an optical system, the method comprising:

• forming at least one bridge structure in a first substrate, wherein the bridge structure comprises a first surface;
• attaching one or more light-emitter devices to the first surface of the bridge structure;
• providing a second substrate, wherein the second substrate has a mounting surface that defines a reference plane;
• forming a structure and an optical spacer on the mounting surface of the second substrate;
• coupling at least one spacer to the mounting surface of the second substrate;
• and
• coupling the first and second substrates together such that a first portion of the first substrate is coupled to the mounting surface of the second substrate and a second portion of the first substrate is coupled to the optical spacer formed on the mounting surface of the second substrate and the first surface of the first substrate faces the mounting surface of the second substrate at an angle with respect to the reference plane, wherein the at least one spacer is in physical contact with the one or more light-emitter devices.