Distributed feedback semiconductor laser device and...

Distributed feedback surface plasmon laser

Distributed-feedback laser having enhanced mode selectivity

Dither controller for ring laser angular rotation sensor

Dither pick-off transducer for ring laser gyroscope

Door assembly for microwave heating apparatus

Dopant diffusion blocking for optoelectronic devices using...

Doped fibre optical amplifier for 1600 nm band

Double active-fiber optical amplifier having a wide-band...

Double channel planar buried heterostructure laser

Double channel planar buried heterostructure laser with...

Double etalon optical wavelength reference device

Double heterostructure laser

Double heterostructure laser

Double heterostructure laser and a method of making same

Double heterostructure laser for direct coupling to an...

Double heterostructure semiconductor laser with periodic...

Double-channel planar heterostructure semiconductor laser

Double-core light-conducting fiber, process for producing...

Double-core, active fiber optical amplifier having a wide...