New developments in optical nonlinear polymers have now enabled the implementation of novel new devices. The most important element of these new devices is usually a coupled ring resonator system that can be tuned with an electric field. In this study we have analyzed the design considerations, for these rings, and show how to determine and optimize all of the critical parameters. In addition, we demonstrate how to make the key characterization tests that confirm the component’s performance. All of this is structured so that it can be extended to the newer and higher electro-optic coefficient materials that are currently being fabricated. Future devices using this technology are expected to play a major role in the rapidly expanding field of optical signal processing.

A simple low‐loss interconnection structure between electro‐optic (EO) and passive polymer waveguides is demonstrated. This easy‐to‐fabricate structure is not subject to loss induced by misalignment. Both a conventional structure and an inverted ridge‐waveguide structure are demonstrated. The structure is suitable for planar lightwave circuit (PLC) applications with excess losses for the fabricated interconnections of around 0.1 dB. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 415–418, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21367

Public reporting burden for this collection of information is estimated to average 1 hour per response, including t gathering and maintaining the data needed, and completing and reviewing the collection of information. We have demonstrated a polymer-based four-element photonic RF phase-shifter array in a single chip. By employing a novel design to remove the operational drawbacks of this type of device, four phase outputs were independently controlled with higl linearity and negligible power fluctuation. A simple vertical stack of these devices can now be used to form an N x N photoni( RF phase shifter array without increasing complexity that will contribute to the future photonic phased array systems. In both fiber wireless and photonic time-stretching system, the power penalty due to the fiber chromatic dispersion effects is undesirable and limits the system perfonnance. We have demonstrated techniques to reduce this power penalty using both polymer-based SSS and DSB modulators. The limit on the modulation frequency due to this penalty can be almost completely eliminated with the SSB modulation without a bandwidth limItation and also can be significantly improved with the DSB modulation by using an alternative quadrature bias point. These results indicate that SSB mo4ulation or appropriately biased DSB modulation can have important roles in both CW and pulsed applications. We report a PB induced optical modulator with dual-driving electrodes. The optical waveguides created support both TE and TM polarisations with low insertion loss, which could be thither reduced by optimising the PB time. The resulting device performances are comparable to that obtained in our earlier Work (9, lii developed using -a ridge-type optical waveguide, and are the first results operating at 1.55 pm wavelength in reported PB induced polymer modulators.

Electro-optic (EO) polymeric Mach-Zehnder (MZ) modulators with photo-bleaching (PB) induced waveguides and dual driving electrodes operating at 1.55 mm wavelength have been demonstrated. The halfwave voltage of the integrated polymeric modulator was 4.5 V in a push-pull configuration with a 1.5 cm interaction length. The extinction ratio was greater than 20 dB, and the fibre-to-fibre insertion loss was 8 dB for the TM polarisation. The achieved fibre-to-fibre insertion loss and driving voltage are the best, to the authors knowledge, in the reported PB induced MZ EO polymeric modulators.