Optical filter

Optical filtering method and device

Optical frequency-division multiplexer and demultiplexer

Optical grating-based device having a slab waveguide polarizatio

Optical interleaver

Optical isolator

Optical isolator

Optical isolator

Optical isolator

Optical isolator

Optical isolator

Optical isolator

Optical isolator

Optical isolator

Optical isolator

Optical isolator

Optical isolator

Optical isolator and circulator

Optical isolator and method for making same

Optical isolator and polarization splitter therefor