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Advanced wavelength-division multiplexing (WDM) requires both efficient multi-wavelength light sources to generate optical carriers and highly scalable photonic-electronic interfaces to encode data on these carriers. In this paper, we give an overview on our recent progress regarding silicon-organic hybrid (SOH) integration and comb-based WDM transmission.
Chip-scale frequency comb sources are likely to become key elements of future terabit/s optical transceivers. We investigate and demonstrate the viability of different comb generation schemes for transmission at multi-terabit/s data rates.
Low-cost photonic integrated circuits (PIC) become increasingly important in medical applications like optical coherence tomography (OCT) for eye care and endoscopy as well as in industrial metrology for distance scanning of surfaces and volumes. We report on two OCT systems fully integrated on a silicon-on- insulator (SOI) chip. With an on-chip reference path, we image objects in distances (5…10)mm...
Limitations of silicon photonics can be overcome by hybrid integration of silicon photonic or plasmonic circuits with organic materials or by photonic multi-chip systems. We give an overview on our recent progress regarding both silicon-organic hybrid (SOH) integration and multi-chip integration enabled by photonic wire bonding.
Limitations of silicon photonics can be overcome by hybrid integration or by photonic multi-chip systems. We give an overview on recent progress regarding silicon-organic hybrid (SOH) integration as well as multi-chip integration enabled by photonic wire bonding.
Silicon-organic hybrid (SOH) integration combines silicon photonic devices with electro-optic organic cladding materials. We demonstrate that SOH modulators can be used to generate advanced modulation formats with high symbol rates at low operating voltages and low energy consumption. Moreover, we show that the SOH approach can be extended to plasmonic waveguide structures, leading to the plasmonic-organic...
We transmit 18 GBd 16QAM signals on 25 spectral lines of a quantum-dash mode-locked laser diode, achieving a 1.562 Tbit/s aggregate data rate. Phase noise is cancelled by self-homodyne detection using LO tones transmitted with the signal.
Silicon-organic hybrid (SOH) and plasmonic-organic hybrid (POH) integration combines organic electro-optic materials with silicon photonic and plasmonic waveguides. The concept enables fast and power-efficient modulators that support advanced modulation formats such as QPSK and 16QAM.
Silicon photonics offers tremendous potential for inexpensive high-yield photonic-electronic integration by enabling fabless fabrication and joint processing of photonic and electronic circuitry. Besides conventional dielectric waveguides, plasmonic structures can also be efficiently realized on the silicon photonic platform, thereby reducing the device footprint by more than an order of magnitude...
Chip-scale frequency comb sources are likely to become key elements of future terabit/s optical transceiver modules. We demonstrate the viability of Kerr comb generators and modulator-based silicon photonic comb sources for transmission at data rates beyond 1 Tbit/s.
We give an overview on our recent achievements in the field of SOH integration, covering in-device electro-optic coefficients r33 in excess of 200 pm/V, highly efficient Mach-Zehnder modulators, IQ modulators, and modulator-based frequency comb generators
Silicon photonics offers tremendous potential for inexpensive high-yield photonic-electronic integration by enabling fabless fabrication and joint processing of photonic and electronic circuitry. Silicon as an optical material, however, falls short of certain properties that are indispensable for high-performance devices. In particular, bulk silicon does not feature any second-order optical nonlinearity...
We demonstrate two 1Tbit/s superchannel architectures using a compact, FSR-tunable gain-switched comb source. SSMF transmission of 18GBaud Nyquist-WDM shaped PDM-QPSK and PDM-16QAM modulation is reported, with a capacity up to 1.296Tbit/s and SE of 7.2bit/s/Hz.
We demonstrate frequency comb generation using silicon-organic hybrid (SOH) electro-optic modulators. The frequency combs are used for WDM data transmission at terabit/s data rates and distances of up to 300 km.
We demonstrate a waveguide-based frequency shifter on the silicon-organic hybrid (SOH) platform, enabling frequency shifts up to 10 GHz. Spurious side-modes are suppressed by more than 23 dB using temporal shaping of the drive signal.
Using a high-Q Kerr-nonlinear SiN microresonator as a frequency comb source we generate a 1.44 Tbit/s (20×18 GBd PDM-QPSK) data stream and transmit it over 300 km. The comb is stabilized by a feedback control.
We demonstrate a synthetic-wavelength interferometry system on a silicon photonic chip, comprising an interferometer with tunable power splitting ratio and photodetectors. The system enables distance measurements with errors below 5 µm and acquisition times of 14 µs.
A swept-source optical coherence tomography system is realized as a silicon photonic integrated circuit comprising passive components and germanium photo detector. Experiments show uniform sensitivity over 5 mm scanning range, enabling simple imaging demonstrations.
This paper introduces a spectral slicing technique that extends the useful spectral range of frequency combs generated through self-phase modulation (SPM) of mode-locked laser pulses. When generating frequency combs by SPM, the spectral range with high-quality carriers is usually limited due to spectral minima carrying too little power. To overcome these limitations, we combine suitable slices of...
We demonstrate a frequency comb generator using silicon-organic hybrid (SOH) electro-optic modulators to obtain flat-top comb spectra. This is the first demonstration of a modulator-based frequency comb generator on silicon. The viability of the device is confirmed in a data transmission experiment achieving an aggregate data rate of 784 Gbit/s.
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