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Journals and Conferences
Second and third-order monolithically integrated coupled ring bandpass filters are demonstrated in the InP-InGaAsP material system with active semiconductor optical amplifiers (SOAs) and current injection phase modulators (PMs). Such integration achieves a high level of tunability and precise generation of optical filters in the RF domain at telecom… (More)
The performance of relatively complex photonic integrated circuits (PICs) is now reaching such high levels that the long sought goal of realizing low-cost, -size, -weight, and -power chips to replace hybrid solutions seems to have been achieved for some applications. This tutorial traces some of the evolution of this technology that has led to an array of… (More)
We demonstrate an integrated programmable photonic filter structure capable of producing bandpass filters with both tunable passband bandwidth and center frequency. Such filters could provide dynamic pre-filtering of very wide bandwidth analogmicrowave signals, essential to the next generation RF-front ends. The photonic filter is constructed from an array… (More)
We demonstrate photonic circuits monolithically integrated on an InP-based platform for use in coherent communication links. We describe a technology platform that allows for the integration of numerous circuit elements. We show examples of an integrated transmitter which offers an on-chip wavelength-division-multiplexing source with a flat gain profile… (More)
A novel flattened ring resonator design utilizing Etched Beam Splitters (EBS) in InGaAsP/InP is proposed and demonstrated. A multiple-thickness hard mask that compensates for RIE-lag realizes waveguides and EBS gaps in a single etch step. ©2009 Optical Society of America OCIS codes: 230.5750 Resonators, 250.5300 Photonic integrated circuits
We compare comb-line generation from a 30 GHz gain flattened ring mode-locked laser and two standard 30 GHz ring mode-locked lasers. The gain flattened ring has a 1.32 THz spectral width whereas the other devices have 420 and 630 GHz spectral widths.
We present a novel InGaAsP/InP integration platform that simultaneously achieves high saturation power and low deeply etched waveguide loss, while requiring only a single blanket regrowth. RF-linearity of SOAs was characterized with record performance.
A fully reconfigurable photonic integrated signal processor Weilin Liu, Ming Li, Robert S. Guzzon, Erik J. Norberg, John S. Parker, Mingzhi Lu, Larry A. Coldren, and Jianping Yao* Microwave Photonics Research Laboratory, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada Department of Electrical and Computer Engineering, University of California Santa… (More)
A novel monolithic programmable optical lattice filter consisting of unit cell building blocks is proposed. Single unit cells incorporating a ring resonator in one arm of a Mach–Zehnder are fabricated in an InGaAsP–InP material system. Programmable poles and zeros are demonstrated and monolithically cascaded unit cells are used to synthesize a flat passband.
Novel monolithic programmable optical filters are proposed and demonstrated. Deeply-etched waveguides are used throughout. Unit cells, incorporating a ring resonator in one arm of a Mach-Zehnder, have given programmable poles and zeros; cascaded unit cells have yielded flat-topped band-pass filter characteristics.