Various apparatus and methods for generating a 90 AP optical pulsetrain. In one embodiment, the apparatus includes: (1) a phase-modulated optical signal generator configured to generate a phase-modulated optical signal having a carrier band and sidebands phase-shifted relative thereto by multiples of 90 and (2) an optical filter coupled to the phase-modulated optical signal generator and configured to 180 phase-shift selected ones of the carrier band and sidebands to generate the 90 AP optical pulsetrain.

 
Web www.patentalert.com

< Layers of group III-nitride semiconductor made by processes with multi-step epitaxial growths

< Mirror for an integrated device

> Automatic verification of Walsh code orthogonality

> Method and system for guaranteeing quality of service for voice-over-IP services

~ 00241