Modal properties of all-active InGaAsP/InP microring lasers (2009)
Stamataki, I., Kapsalis, A., Mikroulis, S., Syvridis, D., Hamacher, M., Troppenz, U., ...
An experimental investigation of the multimode dynamics of 1.55 mu m-InGaAsP/InP microring lasers is demonstrated. Different operation regimes are observed, bidirectional multimode, unidirectional...
Ultracompact microring laser-based optical-add multiplexer (2008)
Bennecer, A., Ingham, J.D., Williams, K.A., Penty, R.V., White, I.H., Ehlers, H., ...
A highly compact and scalable microring-laser-based optical-add multiplexer is presented for wavelength division multiplexed bus networks. The output of a 40 mu m-radius microring laser is vertically...
Photonic integrated device for chaos applications in communications (2008)
Argyris, A., Hamacher, M., Chlouverakis, K.E., Bogris, A., Syvridis, D.
A novel photonic monolithic integrated device consisting of a distributed feedback laser, a passive resonator, and active elements that control the optical feedback properties has been designed,...
Directly modulated wavelength-multiplexed integrated microring laser array (2008)
Bennecer, A., Williams, K.A., Penty, R.V., White, I.H., Hamacher, M., Heidrich, H.
The first demonstration of a directly modulated microring laser array is presented for ON-OFF keyed, wavelength-division-multiplexed fiber-optic data transmission. GaInAsP-InP microring resonators...
Broadband chaos generated by photonic monolithically integrated oscillators (2008)
Argyris, A., Hamacher, M., Chlouverakis, K.E., Bogris, A., Syvridis, D.
A novel photonic monolithic integrated device has been designed, fabricated and evaluated as a compact potential emitter for high-speed optical communication systems that employ chaos data encryption.
Monolithic directly-modulated multi-wavelength-channel GalnAsP/InP micro-ring laser array (2008)
Bennecer, A., Penty, R.V., White, I.H., Williams, K.A., Hamacher, M., Heidrich, H.
Two directly-modulated GalnAsP/InP micro-rings with different radii vertically-coupled on a common bus are assessed for both independent and simultaneous operation. A device area
Waferbonded active/passive vertically coupled microring lasers (2008)
Hamacher, M., Heidrich, H., Troppenz, U., Syvridis, D., Alexandropoulos, D., Mikroulis, S., ...
Microring resonators fabrication by BCB adhesive wafer bonding (2008)
Dragoi, V., Alexe, M., Hamacher, M., Heidrich, H.
Microring resonator devices are attractive for Wavelength Division Multiplexing (WDM) applications because of their inherent spectral characteristics. GaInAsP/InP microring resonator devices were...
Adhesive wafer bonding for wafer-level fabrication of microring resonators. (2007)
Dragoi, V., Mittendorfer, G., Thanner, C., Alexe, M., Pintilie, L., Hamacher, M., ...
Vertically coupled microring laser devices based on InP using BCB waferbonding (2007)
Hamacher, M., Troppenz, U., Heidrich, H., Dragoi, V.
In this paper, we present our approach on the realization of vertical coupling technology that has been verified for microlaser fabrication as well as for the realization of high Q resonators with...
Adhesive wafer bonding for wafer-level fabrication of microring resonators (2007)
Dragoi, V., Mittendorfer, G., Thanner, C., Alexe, M., Pintilie, L., Hamacher, M., ...
GaInAsP/InP passive microring resonator devices were successfully fabricated using a vertical integration concept with GaInAsP/InP-on-GaAs wafer bonding. BCB adhesive bonding has been identified as...
Vertically coupled GalnAsP/lnP microring lasers fabricated by using full wafer bonding (2007)
Heidrich, H., Hamacher, M., Troppenz, U., Syvridis, D., Alexandropoulos, D., Mikroulis, S., ...
We summarize results on the processing and characterization of current injected 1.55 µm single- and multi-microring lasers including vertical active/passive waveguide coupling. The devices were...
Hamacher, M., Apweiler, R., Arnold, G., Beckers, A.
The Human Proteome Organisation (HUPO) initiated several projects focusing on the proteome analysis of distinct human organs. The Brain Proteome Project (BPP) is the initiative dedicated to the...
Mikroulis, S., Stamataki, I., Alexandropoulos, D., Hamacher, M., Roditi, E., Syvridis, D.
An enhanced low frequency relative intensity noise due to mode hopping induced from the asymmetric gain suppression in InGaAsP-InP microring lasers, is observed experimentally for the first time. The...
Tee, C.W., Williams, K.A., Penty, R.V., White, I.H., Hamacher, M.
Vertically coupled microrings in an all-pass filter configuration are fabricated with a range of waveguide misalignments deliberately introduced into the lithography masks to demonstrate noncritical...
Hamacher, M., Apweiler, R., Arnold, G., Beckers, A.
The Human Proteome Organisation (HUPO) initiated several projects focusing on the proteome analysis of distinct human organs. The Brain Proteome Project (BPP) is the initiative dedicated to the...
Fleischer, A.S., Troppenz, U., Hamacher, M., John, W.
The vertical coupling of active InP based ring resonators and passive feeding waveguides necessitates the use of a waferbonding technology in the fabrication process. The required bond material (BCB)...
Widely tunable all-active microring lasers through phase shifted controlled feedback (2006)
Kapsalis, A., Stamataki, I., Mikroulis, S., Syvridis, D., Hamacher, M.
A tunable laser based on an InGaAsP-InP microring resonator with multimode interference coupler is demonstrated. Tuning ranges from 18 to 30 nm are achieved and mappings of the tunable operation are...
Wafer-level fabrication of microring resonators using adhesive wafer bonding (2006)
Dragoi, V., Mittendorfer, G., Thanner, C., Lindner, P., Alexe, M., Pintilie, L., ...
This paper reports the first microring resonators device fabrication at wafer-level using adhesive bonding with BCB (benzocyclobutene) intermediate layers. The vertical coupling concept was used...
Hamacher, M., Apweiler, R., Arnold, G., Beckers, A., ROBBEN, Johan
The Human Proteome Organisation (HUPO) initiated several projects focusing on the proteome analysis of distinct human organs. The Brain Proteome Project (BPP) is the initiative dedicated to the...
A comparison of the HUPO Brain Proteome Project pilot with other proteomics studies (2006)
MARTENS, L, MULLER, M, STEPHAN, C, HAMACHER, M, REIDEGELD, KA, MEYER, HE, ...
Tee, C.W., Williams, K.A., Penty, R.V., White, I.H., Troppenz, U., Hamacher, M., ...
We present a novel vertically-coupled active-passive integration architecture that provides an order of magnitude reduction in coupling coefficient variation between misaligned waveguides when...
Optical switching of clockwise/anti-clockwise lasing in bus coupled microrings (2005)
Troppenz, U., Hamacher, M., Radziunas, M., Heidrich, H.
Clockwise/anti-clockwise switching of InP based bus-coupled microring lasers induced by external light injection has been measured and simulated. Device design and injection parameters of bistability...
Alexandropoulos, D., Kapsalis, A., Syvridis, D., Troppenz, U., Hamacher, M., Heidrich, H.
We propose a method for suppressing higher order modes in vertically coupled passive microring resonators. The method is analyzed using 3D FDTD simulations.
Hamacher, M., Troppenz, U., Heidrich, H.
Recent developments of active microring resonator components, design and fabrication based on GaInAsP/InP are summarised. The technological challenges up to the implementation of vertical coupling by...
Verfahren zur kraftschluessigen Ganzwaferverbindung (2004)
Hamacher, M., Heidrich, H., Rabus, D.G., Troppenz, U.
DE 10153054 A UPAB: 20030813 NOVELTY - A solderable metal eutectic (ME) with a melting point in the range below 350 degrees C is used as a frictional coupling component, and forms a low-resistance...
Hamacher, M., Heidrich, H., Hentschel, M., Rabus, D.G., Richter, K.
WO2003005499 A UPAB: 20030307 NOVELTY - The device has a has a circular resonator (CR) with one mirror plane and at least one monolithic integrated output coupling waveguide (WG) associated with a...
Rabus, D.G., Hamacher, M., Troppenz, U., Heidrich, H.
A key device in all-optical networks is the optical filter. A ring resonator filter with an integrated semiconductor optical amplifier (SOA) on the basis of GaInAsP-InP has been investigated and...
Rabus, D.G., Hamacher, M., Heidrich, H., Troppenz, U.
Triple coupled ring resonator (TRR) add/drop filters with parallel and serial configurations with integrated semiconductor optical amplifiers (SOAs) were designed and fabricated. The implemented SOAs...
All-active InGaAsP/InP ring cavities for widespread functionalities in the wavelength domain (2002)
Troppenz, U., Hamacher, M., Rabus, D.G., Heidrich, H.
All-active ring resonator structures allow filter operation as well as laser mode operation, only depending on the driving conditions. Add/drop filter devices based on active InGaAsP/InP have been...
High-Q channel-dropping filters using ring resonators with integrated SOAs (2002)
Rabus, D.G., Hamacher, M., Troppenz, U., Heidrich, H.
The filter response of single-ring resonators with integrated semiconductor optical amplifiers based on GaInAsP-InP is presented. The devices with free spectral ranges of 25 and 50 GHz have the form...
OPTOELEKTRONISCHE SCHALTUNG (2002)
Heidrich, H., Kaiser, R., Hamacher, M.
DE 19522591 A UPAB: 19970205 The optoelectronic integrated circuit contains a first interface (7) for a first light conductor, for an essentially monochrome source (5) of light having a first...
Rabus, D.G., Hamacher, M., Heidrich, H.
A racetrack shaped double ring resonator (DRR) filter is demonstrated with radii of 200 pm. The double ring resonator contains two -3 dB muttimode interference (MMI) couplers for I/O coupling and a -...
Hamacher, M., Heidrich, H., Rabus, D.G., Troppenz, U.
Miniaturization of waveguide circuits is inherently connected with the implementation of highly confined waveguides as one prerequisite for the building of sharp bends and optical microring circuits....
Heidrich, H., Kaiser, R., Albrecht, P., Fidorra, S., Hamacher, M., Rehbein, W.
Optical crosstalk from a 1.3 mu m laser to a 1.55 mu m photodiode on a single InP substrate, and its suppression within 1.3 mu m/1.5 mu m Y-junction transceiver OEICs, has been analyzed...
MMI-coupled ring resonators in GaInAsP-InP (2001)
The characteristic response of single and double GaInAsP-InP ring resonators in the form of race tracks with a radius of 100 and 200 mu m are presented. The used multimode interference (MMI) coupler...
Optical crosstalk within monolithic transceiver ICs on GaInAsP/InP (2000)
Kaiser, R., Hamacher, M., Heidrich, H., Albrecht, P., Janiak, K., Malchow, S., ...
Static optical crosstalk within monolithic 1.3 mu m/1.5 mu m transceiver photonic integrated circuits (PICs) was studied. The efficiency of different optical barriers is analysed and a maximum...
Hamacher, M., Kaiser, R., Heidrich, H., Albrecht, P., Borchert, B., Janiak, K., ...
This paper reports on 1.3 mu m complex coupled DFB lasers, 1.55 mu m (wavelength selective) photodiodes and passive spot size converters integrated with Y-shaped waveguide structures on InP,...
Monolithically integrated 1.5 mu m/1.3 mu m transceiver modules for full-duplex operation (1999)
Hamacher, M., Heidrich, H., Kaiser, R., Albrecht, P., Ebert, W., Franke, D., ...
1.5/1.3 mu m transceiver-photonic integrated circuits (PICs) with in-line and Y-junction architecture including a 1.3- mu m wavelength-selective photodetector building block have been fabricated. The...
Full-duplex WDM transceiver PICs (1998)
Hamacher, M., Heidrich, H., Kaiser, R., Albrecht, P., Ebert, W., Malchow, S., ...
Results on the development of monolithically integrated bi-directional full duplex WDM GaInAsP-InP transceivers for dual spectral window operation (1.3 and 1.5 mu m) are reported. Their fabrication...
Kaiser, R., Hamacher, M., Heidrich, H., Albrecht, P., Ebert, W., Gibis, R., ...
A versatile and extendable integration process suitable for future economic fabrication of photonic integrated circuits (PICs) is described. The advantages and technological challenges are emphazised...
A novel process enabling the simultaneous electron-beam exposure of different types of structures is presented, illustrated by the synchronous generation of filter gratings and waveguides. Optimized...
Novel compact InP-based polarisation converters using ultra short bends (1996)
Dam, C Van, Spiekman, LH, Ham, FPGM Van, Groen, FH, Tol, JJGM Van Der, Moerman, I, ...
Novel compact polarization converters based on ultra short bends (1996)
Dam, C Van, Spiekman, LH, Ham, FPGM Van, Groen, FH, Tol, JJGM Van Der, Moerman, I, ...
Bi-directional photonic integrated transceivers for optical communication systems (1996)
Heidrich, H., Hamacher, M., Kaiser, R., Wenger, G., Albrecht, P., Loffler, R., ...
Bi-directional, full duplex transceiver InP/GaInAsP PIC architectures with high crosstalk suppression ratio values for single and dual spectral window operation (1.3 mu m and 1.5 mu m) are reported...
Full-duplex transceiver-PIC fabricated by using three MOVPE growth steps (1996)
Hamacher, M., Trommer, D., Heidrich, H.
Summary form only given. For future photonic communications systems low-cost optoelectronic-integrated circuits are indispensable. These photonic ICs should have an ultrahigh capacity and should...
MOMBE growth of high quality GaInAsP (lambda g=1.05 mu m) for waveguide applications (1996)
Kuenzel, H., Albrecht, P., Gibis, R., Hamacher, M., Schelhase, S.
The MOMBE growth of Ga0.11In0.89As0.23P0.77 material with a band gap equivalent emission wavelength of 1.05 mu m carried out in the growth temperature range of 465-500 degrees C provided material of...
Hamacher, M., Trommer, D., Li, K., Schroeter-Janssen, H., Rehbein, W., Heidrich, H.
An optimized integration process is reported requiring only three epitaxial growth steps for the fabrication of an OEIC encompassing a single-mode laser, a waveguide element, and fast photodiodes....
Novel compact polarization converters based on ultra short bends. (1996)
VANDAM, C, SPIEKMAN, LH, VANHAM, FPGM, GROEN, FH, VANDERTOL, JJGM, Moerman, Ingrid, ...
Novel compact InP-based polarisation converters using ultra short bends (1996)
VAN DAM, C, SPIEKMAN, LH, VAN HAM, F, GROEN, FH, VAN DER TOL, JJGM, Moerman, Ingrid, ...
High bandwidth heterodyne receiver OEIC, fabricated with a three stage MOVPE (1995)
Hamacher, M., Trommer, D., Li, K., Schroeter-Janssen, H., Rehbein, W., Heidrich, H.
A very simple integration process requiring only 3 epitaxial steps for the fabrication of a heterodyne receiver including a fast DFB-laser (11 GHz), a 3 dB-coupler and high speed balanced receivers...
Hamacher, M., Trommer, D., Heidrich, H., Albrecht, P., Jacumeit, G., Passenberg, W., ...
For the first time a packaged polarization diversity coherent receiver OEIC including detector units (photodetectors, JFET, load resistor) has been fabricated with the following data: waveguide loss...
Monolithically integrated heterodyne receivers based on InP (1994)
Heidrich, H., Fidorra, F., Hamacher, M., Kaiser, R., Li, K., Trommer, D., ...
Future OFDM communication systems demand the availability of high performance and low cost OEICs. The achievement of a completely integrated polarization diversity heterodyne receiver makes the...
Weber, R., Fidorra, F., Hamacher, M., Heidrich, H., Jacumeit, G.
For the packaging of integrated InP devices the authors present two approaches, which rely on a passive fiber alignment. In one case the fibers are hold in V-grooves etched directly into the InP,...
Hamacher, M., Heidrich, H., Kruger, U., Stenzel, R., Bauer, J.G., Albrecht, H.
The economic implementation of coherent optical systems requires practical integrated optical front-end receiver devices with reasonable degree of integration. As a precursor to such an OEIC, an...
Passive mode converter with a periodically tilted InP/GaInAsP rib waveguide (1992)
Heidrich, H., Albrecht, P., Hamacher, M., Schroeter-Janssen, H., Weinert, C.M.
TE to TM converters with constant 45 degrees operation are a key component in OEICs for coherent optical system applications. A passive TE/TM-mode converter with a laterally tilted rib waveguide...
Heidrich, H., Hamacher, M., Albrecht, P., Engel, H., Hoffmann, D., Imhof, D., ...
The fabrication of an integrated GaInAsP/InP polarisation diversity circuit is described. The optoelectronic integrated circuit (OIC) is designed with respect to high process tolerances and easy...
Polarization converter and splitter for a coherent receiver optical network on InP (1990)
Albrecht, P., Hamacher, M., Heidrich, H., Hoffmann, D., Schlak, M., ...
The key elements of a coherent optical receiver network using a polarization diversity scheme are summarized. The principles of operation and design of the elements for monolithic integration of the...
The development of a polarization-diversity heterodyne receiver-waveguide switch on InP (1990)
Albrecht, P., Hamacher, M., Heidrich, H., Hoffmann, D., Nolting, H.P., Schlak, M., ...
After a brief discussion of the problem of providing terminal equipment fully to utilize the transmission capacity of the single-mode optical fibre, the article shows the proposed architecture of an...
TE/TM mode splitters on InGaAsP/InP (1990)
Albrecht, P., Hamacher, M., Heidrich, H., Hoffmann, D., Nolting, H., Weinert, C.M.
In a monolithic heterodyne polarization diversity receiver, mode splitters which effectively separate the TE and TM polarization of the optical wave are required. For this purpose, a directional...
Kirchhoff, F, Pöhlmann, S, Hamacher, M, Means, R E, Kraus, T, Uberla, K, ...
The recent identification of coreceptors that mediate efficient entry of human immunodeficiency virus type 1 (HIV-1) suggests new therapeutic and preventive strategies. We analyzed simian...
Kirchhoff, F, Pöhlmann, S, Hamacher, M, Means, R E, Kraus, T, Uberla, K, ...
The recent identification of coreceptors that mediate efficient entry of human immunodeficiency virus type 1 (HIV-1) suggests new therapeutic and preventive strategies. We analyzed simian...