Showing papers by "Nils Weimann published in 2011"
TL;DR: In this article, a monolithic dual-polarization dual-quadrature coherent receiver with balanced detection on InP using a single epitaxial step was realized, where the polarization splitters, 90° hybrids, and balanced photodiodes were integrated in 4.1 mm2.
Abstract: We realized a monolithic dual-polarization dual-quadrature coherent receiver with balanced detection on InP using a single epitaxial step. It monolithically integrates the polarization splitters, 90° hybrids, and balanced photodiodes in 4.1 mm2 . We demonstrate reception of 112-Gb/s polarization-division-multiplexed quadrature phase-shift keying with 17.3-dB optical signal-to-noise ratio at 10-3 bit-error rate.
35 citations
06 Mar 2011
TL;DR: In this paper, a single-chip InP coherent receiver for detection of PDM-QPSK signals was developed, which meets specifications for 100G between 1530 and 1570 nm.
Abstract: We developed a single-chip InP coherent receiver for detection of PDM-QPSK signals, which meets specifications for 100G between 1530 and 1570 nm. Integration includes a mode converter for efficient coupling from an SMF array.
26 citations
18 Sep 2011
TL;DR: In this paper, a high-power balanced photo-detector with over 1 W of RF output power at 2 GHz and OIP3 of 48 dBm at room temperature was demonstrated.
Abstract: We demonstrated a high-power balanced photo-detector with over 1 W of RF output power at 2 GHz and OIP3 of 48 dBm at room temperature. Responsivity is 0.65 A/W and CMRR > 40 dB.
10 citations
Patent•
20 May 2011TL;DR: In this paper, the first and second output coupler pair axis is offset at a different nonzero second distance from the plane of symmetry in a planar optical substrate with a waveguide slab.
Abstract: An optical device includes a waveguide slab, first and second input port couplers, and first and second output port couplers located over a planar optical substrate. The waveguide slab has a plane of symmetry. The first and second input port couplers extend from the waveguide slab and have an input coupler pair axis located about midway between the first and second input port couplers. The input coupler pair axis is offset at a nonzero first distance from the plane of symmetry. The first and second output port couplers extend from the waveguide slab and have an output coupler pair axis located about midway between the first and second output port couplers. The output coupler pair axis is offset at a different nonzero second distance from the plane of symmetry.
6 citations
Proceedings Article•
22 May 2011TL;DR: In this article, a single-chip dual-channel monolithically integrated InP coherent receiver photonic integrated circuit with a shared local oscillator port was demonstrated for coherent detection of 100G PDM-QPSK signals.
Abstract: We demonstrate a single-chip dual-channel monolithically integrated InP coherent receiver photonic integrated circuit with a shared local oscillator port for application to coherent detection of 100G PDM-QPSK signals. The receiver meets performance specifications for 100G over the entire C-band (1530–1570 nm) measured over a temperature range of 20°C up to 90°C.
1 citations
18 Nov 2011
TL;DR: In this paper, an integrated InP high-power dual-pair balanced uni-traveling carrier photo-detector was demonstrated for enhancing the performance of coherent analog microwave photonic links.
Abstract: We demonstrated an integrated InP high-power dual pair balanced uni-traveling carrier photo-detector. Each pair delivers over 1 W of RF output power into a 50 Ω load at 2 GHz which is 6 dB higher than a discrete diode of the same junction diameter. The responsivity is 0.65 A/W and the common mode rejection ratio of the balanced diode pair was measured to be greater than 40 dB. The OIP3 was measured to be 48 dBm for one balanced pair of diodes. This balanced dual pair photo-detector is very well suited for enhancing the performance of coherent analog microwave photonic links.