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Journals and Conferences
We overview and summarize the progress of the spectral phase encoded time spreading (SPECTS) optical code division multiple access (O-CDMA) technology. Recent progress included a demonstration of a 320 Gbit/ s ͑32-user ϫ 10 Gbit/ s͒ all-optical passive optical network testbed based on the SPECTS O-CDMA technology and a theoretical prediction of the spectral… (More)
We report error-free spectral encoding and decoding operation of an InP monolithic, ultra-compact optical-CDMA encoder/decoder photonic chip pair. The experimental results demonstrate the strong potential for realizing high performance O-CDMA networks with InP micro-systems. 1. Introduction The Optical Code Division Multiple Access (O-CDMA) technology… (More)
The Scandinavian wolf population descends from only five individuals, is isolated, highly inbred and exhibits inbreeding depression. To meet international conservation goals, suggestions include managing subdivided wolf populations over Fennoscandia as a metapopulation; a genetically effective population size of Ne⩾500, in line with the widely accepted… (More)
We demonstrate a compact monolithically-integrated InP optical arbitrary waveform generator, consisting of an arrayed waveguide grating pair with 10 GHz channel spacing, 10 high-speed optical amplitude modulators, and 10 high-speed optical phase modulators. 1. Introduction Line-by-line pulse shaping , in which intensity and phase manipulation of… (More)
A monolithically integrated InP chip for optical arbitrary waveform generation (OAWG) and/or pulse-coding/decoding is demonstrated using a 20-GHz AWG pair and 10 high-speed phase modulators. The fabrication and performance of the InP chip will be presented.
A very compact InP-Based 16-channel O-CDMA encoder-/decoder chip (3.8mm x 6.8mm) has been designed, fabricated and characterized. The device successfully performs O-CDMA spectral encoding. Numerous laboratory studies, and field trials of optical code division multiple access (O-CDMA) have proven O-CDMA as a promising candidate for local access networks… (More)
We realize a 32-channel InP-based Arrayed-Waveguide Grating (AWG) with a 5-GHz channel spacing. The AWG shows approximately 14 dB excess-loss, 9 dB crosstalk, and 21 × 22 mm 2 dimensions. 1. Introduction Wavelength multiplexing and demultiplexing components with high-resolution channel spacing are indispensible for ultrahigh-density WDM systems. So far,… (More)
We demonstrate the optical phase characterization of a monolithically integrated InP optical-CDMA encoder/decoder chip using frequency-resolved optical gating.
We demonstrate a 10-channel InP-based Arrayed-Waveguide Grating (dimensions = 5.0x6.0 mm 2) with a 20-GHz channel spacing. The excess loss of the AWG is 5.5-6.3 dB, and the crosstalk level is below-15 dB. Introduction Arrayed waveguide Gratings (AWGs) are one of the key components for wavelength division multiplexing (WDM) applications, and… (More)
We report a monolithic, ultra-compact optical-CDMA encoder/decoder photonic chip in InP with surface planarization by low-pressure Hydride-Vapor-Phase-Epitaxy regrowth. The chip consists of an AWG pair and eight electro-optic phase shifters and demonstrated excellent encoding operation. 1. Introduction The Optical Code Division Multiple Access (O-CDMA)… (More)