Jonathan P. Heritage

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We analyze a new technique for encoding and decoding of coherent ultrashort light pulses. In particular, we discuss the temporal and statistical behavior of pseudonoise bursts generated by spectral phase coding of ultrashort optical pulses. Our analysis is motivated by recent experiments that demonstrate high resolution spectral phase coding of picosecond(More)
This paper presents the concept of an optical transmitter based on optical arbitrary waveform generation (OAWG) capable of synthesizing Tb/s optical signals of arbitrary modulation format. Experimental and theoretical demonstrations in this paper include generation of data packet waveforms focusing on (a) achieving high spectral efficiencies in quadrature(More)
—We demonstrate an error-free four-user 10-Gb/s/user optical code-division multiple-access network testbed employing the spectral phase encoded time spreading technique and nonlinear thresholding. The experiments successfully overcome multiuser interference , resulting in error-free operation.
We describe the precise shaping and mode-resolved amplitude and phase characterization of optical arbitrary waveforms by using a 20 GHz optical frequency comb and integrated 64 x 20 GHz channel arrayed waveguide grating pair. Complex waveforms with large variations in phase and amplitude between adjacent modes were generated and characterized.
This paper presents single channel, 200 Gb/s, 20-bit DPSK packets generated by an optical arbitrary waveform generation based optical transmitter with chromatic dispersion precompensation, and their transmission through 100 km of single-mode-fiber and recovery.
—We successfully demonstrate a spectral phase-encoded time-spreading (SPECTS) optical code-division multiple-access (O-CDMA) field trial on an 80.8-km link within the Boston-South Network (BOSSNET) using a fully-integrated, polarization-independent arrayed-waveguide grating (AWG)-based encoder/decoder. The subpicosecond pulse source is based on an(More)
This study evaluates the relative merits of three approaches (transparency, opacity, and translucency) for establishing calls in a wavelength-routed optical network. Call-admission algorithms employ online BER computation and include the eeects of transmission impairments. 1 2 Transparent vs. opaque vs. translucent wavelength-routed optical networks