Programmable signal time delay device using electro-optic and pa

Programmable, differential wavelength discriminator

Projection display with electrically controlled waveguide-routin

Projection display with electrically-controlled waveguide routin

Propagation in lowest order modes of multimode graded index...

Protected optical switching matrix

Protecting optical coupling between optical ports on...

Protecting optical coupling between optical ports on...

Protecting optical switches

Protection scheme for single fiber bidirectional passive...

Protection schemes for mirror-failure in free-space...

Protection switching in bidirectional WDM optical...

Protection switching in bidirectional WDM optical...

Protection switching in bidirectional WDM optical...

Protective cladding for a mono-mode directional coupler

Providing a refractive index change in an ion diffused material

Pulse stretcher and compressor including a multi-pass Bragg...

Pump couplers for double-clad fiber devices

Pump coupling of double clad fibers

Pump directed optical switching element