Integrated optics platforms offer the possibility to implement compact photonic devices for nonlinear optics applications. Modern nanofabrication facilities allow the fabrication of sub-micron-sized waveguide geometries that confine light to reach very high optical intensities. These intensities enable efficient nonlinear processes that are further enhanced by using materials with high nonlinea...

This paper presents a new photonic integrated circuit, namely optical pulse-train generator, which is developed based on the transfer matrix analysis of microrings and utilizes a time-interleaved architecture. This circuit can generate multiple optical pulses sequentially from a single trigger pulse, with the timing and amplitude of each pulse determined by circuit design. Hence it can be appli...

Traditional planar lightwave circuits fabricated from lithographically-patterned waveguides in glasses, semi-conductors or polymers cannot accommodate the wide range of materials required by typical optical devices. In addition, such waveguides are nearly always defined in the material surface and thus can support only a limited density of interconnects and suffer poor performance at waveguide ...

Some of the key components are demonstrated to make three-dimensional (3-D) optical integrated circuits possible using polymers. Fabrication techniques of shadow reactive ion etching, shadow photolithography, and gray-level photolithography to produce complex 3-D integrated optic structures are demonstrated. Vertical waveguide bends exhibit excess losses of <0.3 dB, and vertical power splitters...

Effective compensation of phase noise in laser communication calls for fast, real-time, adaptive wavefront control. We present an analog, continuous-time, high-speed VLSI (Very Large Scale Integration) controller implementing multi-dithering perturbative gradient descent optimization of a direct measure of optical performance. The system applies parallel sinusoidal perturbations to the wavefron...

We demonstrate a monolithic integration of WDM light source for silicon photonics by cascade of Al2O3: Er3+ DFB lasers. Simultaneous operation of four channels is achieved with dl/dT = 15.3±0.1 pm/oC temperature dependent wavelength shift. OCIS codes: (130.0130) Integratsed optics; (130.3120) Integrated optics devices; (140.3460) Lasers.

We demonstrate single mode three-dimensional optics fabricated via direct-write lithography in diffusive photopolymers, including uniform waveguides, symmetrical waveguide tapers, 90 OCIS codes: sharp waveguide bends and waveguides through thin hybrid subcomponents. (130.3120) Integrated optics devices; (230.7370) Waveguides; (140.3450) Laser-induced chemistry.

Beam propagation in photorefractive LiNbO3 planar waveguides has been studied at different beam intensities and propagation lengths. Self-defocusing and beam break-up have been observed and explained using BPM simulations under a two-center band transport model. OCIS codes: 190.4390 Nonlinear optics, integrated optics; 190.5940 Self-action effects; 230.7390 Waveguides,

I introduce a new field: electro-photonics, where the best of the electronic and photonic technologies are combined to increase the capacity, flexibility and energy efficiency of communications systems. OCIS codes: (060.0060) Fiber optics and optical communications; (070.2025) Discrete optical signal processing; (130.0250) Optoelectronics; (130.3120) Integrated optics devices; (130.4110) Modula...

We propose and analyze a generic technique to engineer the two-photon quantum state generated by spontaneous parametric downconversion (SPDC) in nonlinear photonic nanowires using any suitable material system. Through dispersion engineering in nanowires, the group velocity of each photon involved in the SPDC process can be tuned such that pure heralded single photons or maximally polarization e...