<title>Novel coding technique for the implementation of an electro-optic analog-to-digital converter</title>

We report a new coding technique for the implementation of an electro-optic analog-to-digital (A/D) converter. This coding and A/D conversion can be implemented with an array of tunable, high finesse, channel waveguide Fabry-Perot etalons. Preconfigured dc biases have been shown, on a proton exchanged device on x-cut LiNbO , to shift the quantized etalon transmission peaks with respect to the applied rf signal voltage necessary for converting analog voltages to digital optical transmissions. Some design considerations for the implementation of the device are discussed

Polymer microstructure waveguides on various substrates for optical interconnection and communication

Planar polymer lightguides ofpoly-(methyl methacrylate) (PMMA) are doped with a UV sensitive material and an azo dye, sensitive for green or blue light (514, 488 nm) simultaneously. The UV-sensitive material is used for recording a permanent waveguide pattern while the azo dye is meant for a reversible light induced refractive index change. Although the azo dye is partly destroyed by the UV light and the photochemical reaction during waveguide formation, a light induced phase modulation in the guide is still possible in such bifunctional materials

Thick phase hologram for optical clock distribution application on wafer scale integrated circuits

We propose the first monolithic optical clock distribution network on wafer scale integrated circuits (WSIC) . This new architecture can save real estate on VLSI chips and eliminate the packaging, alignment and interface problems of previously proposed architectures. A l-to-3 optical fan out for clock signal distribution application is demonstrated by utilizing a DCC multiplexed volume hologram on a thin quartz plate

Wavelength division demultiplexing in the near infrared using holographically processed polymer microstructure waveguides

A five-channel wavelength-division demultiplexer (WDDM) is demonstrated that is fabricated in polymer microstructure waveguides and operates over a 100-nm bandwidth centered at 750 nm in the near-IR. The device has a maximum diffraction efficiency of about 50 percent at 730 nm, a spectral bandwidth of about 15 nm, and effectively utilizes the large optical transparency of the photolime gelatin polymer material at laser diode wavelengths

High-channel-density broadband wavelength division multiplexers based on periodic grating structures

High Channel density broadband wavelength division multiplexers (WDMs) based on periodic grating structures are discussed. These so-called single-window WDMs transmit a large number (> 100) of independent wavelength channels through a single fiber and within a single fiber communications window in both singlemode and multimode fiber cases. In this paper, single-grating WDMs are analyzed in the context of the fundamental relation between channel density, crosstalk, power budget, and diffraction limited beam propagation. Also, the practical aspects of WDM-based fiber optic networks for high-speed (broadband) multimedia communication are discussed