optical interferometer
11Optical DPSK demodulator — An Optical DPSK demodulator is a device that provides a method for converting an optical differential phase shift keying (DPSK) signal to an intensity keyed signal at the receiving end in fiber optic communication networks. It is also known as… …
12Optical hybrid — A 90° optical hybrid is a six port device that is used for coherent signal demodulation for either homodyne or heterodyne detection. It would mix the incoming signal with the four quadratural states associated with the reference signal in the… …
13Optical autocorrelation — Classification of the different kinds of optical autocorrelation. In optics, various autocorrelation functions can be experimentally realized. The field autocorrelation may be used to calculate the spectrum of a source of light, while the… …
14Optical interleaver — Illustration of the function of an optical interleaver and de interleaver An optical interleaver is a 3 port passive fiber optic device that is used to combine two sets of dense wavelength division multiplexing (DWDM) channels (odd and even… …
15Optical Coherence Tomography — Optische Kohärenztomografie (engl. optical coherence tomography, OCT) ist ein Untersuchungsverfahren, bei dem Licht geringer Kohärenzlänge mit Hilfe eines Interferometers zur Entfernungsmessung reflektiver Materialien eingesetzt wird. Vorteile… …
16Optical amplifier — An optical amplifier is a device that amplifies an optical signal directly, without the need to first convert it to an electrical signal. An optical amplifier may be thought of as a laser without an optical cavity, or one in which feedback from… …
17Optical microscope — Microscope Uses Small sample observation Notable experiments Discovery of cells Inventor Hans Lippershey Zacharias Jans …
18Optical switch — This article is about the optical component. For the optoelectronic component, see Slotted optical switch. In telecommunication, an optical switch is a switch that enables signals in optical fibers or integrated optical circuits (IOCs) to be… …
19Optical cavity — An optical cavity or optical resonator is an arrangement of mirrors that forms a standing wave cavity resonator for light waves. Optical cavities are a major component of lasers, surrounding the gain medium and providing feedback of the laser… …
20Optical instrument — An optical instrument either processes light waves to enhance an image for viewing, or analyzes light waves (or photons) to determine one of a number of characteristic properties. Contents 1 Image enhancement 2 Analysis 3 Other optical devices …
