The optical coupling element receives the substantially collimated white light from the first optical assembly and directs the light to an optical fiber.

A laser gyroscope (30) comprising two ninety degree turning prisms (20, 22) optically connected.

Thus, opto-coupled MOSFETS, pin diodes, or other kind of solid state switches, may be utilized.

The high voltage output terminals are isolated from the network by optical coupling electronic devices (30).

A system for optically detecting an electrical arc in a power supply.

The pulse oximeter comprises an optical frequency converter, a luminous driving circuit, a display, a microprocessor, a voltage stabilizing circuit module, a light coupled device and a power supply.

A PET device (100) includes an optical-coupling peeling test unit (27).

An optically coupled rotary encoder that is capable of measuring and encoding the angle of rotation of a rotating or stationary object.

An optical coupling arrangement successively propagates the light signal in each of these structures, so that it accumulates the dispersion compensation effect of each.

The optical-coupling peeling test unit (27) also detects the acoustic wave that has propagated through the detector module (14) and performs a frequency analysis of the detected acoustic wave.

Planar waveguide apparatus provides a waveguide (100) at least partially overlying a passive buried rib waveguide for coupling optical radiation therebetween.

The secondary projection system (20) preferably comprises a projection unit (22) optically coupled to the screen (14) of the PTV and an auxiliary image source (24) coupled to the projection unit (22).