Appearance and Structure of an Optical Module
There are various types of optical modules, and their appearances and structures are different. However, the basic structure of an optical module includes some common parts, as shown
Tec optical module structure
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Three main components make up the optical module: the external visible housing, the optoelectronic components, and the PCBA. From the perspective of whether automatic temperature control is required, optical modules can be classified into two types: non-refrigerated (without TEC) and refrigerated (with TEC). This application note first briefly discusses the basic operation theory of a thermoelectric cooler (TEC) and its application in optical modules. In optical telecommunication systems, diode lasers are mostly used either as the signal source in the transmitters or as the energy source in the optical amplifiers, their operations affect the performance of the whole system directly.
