This is a generic category for the optical layer of the Mosquito sensor. Variations of this will contain different configurations of optical/photonics components.
Assembling of different optical/photonic modules of the Mosquito
This is an assembly of a PD and a LD, used in the Mosquito and in other types of optical sensors.
Some of them are canned into metal casing. Others can come as fiber assemblies using couplers or circulators
An optical circulator is a special fiber-optic component that can be used to separate optical signals that travel in opposite directions in an optical fiber, analogous to the operation of an electronic circulator. An optical circulator is a three-port device designed such that light entering any port exits from the next. This means that if light enters port 1 it is emitted from port 2, but if some of the emitted light is reflected back to the circulator, it does not come out of port 1, but instead exits from port 3. Circulators can be used to achieve bi-directional transmission over a single fiber. Because of its high isolation of the input and reflected optical powers and its low insertion loss, optical circulators are widely used in advanced communication systems and fiber-optic sensor applications.
Optical circulators are non-reciprocal optics, which means that changes in the properties of light passing through the device are not reversed when the light passes through in the opposite direction. This can only happen when the symmetry of the system is broken, for example by an external magnetic field. A Faraday rotator is another example of a non-reciprocal optical device.
Connects optical guides: n inputs to m outputs. Works in reverse.
Type of work - Assembling or making of optical/photonics parts. This type of work requires some techniques and training. Manufacturing can be done manually or using some equipment. This is about making stuff to be exchanged on the market, or about making prototypes or demos, for marketing and sales purposes.
Quality testing of the optical layer once assembled.
Type of work - Quality control type of work. This is a general category that applies for many manufacturing processes.