Single-chip optical beam forming network in LPCVD waveguide technology based on optical ring resonators

Roeloffzen

et al. 2010

J. Lightwave Technol.

Self Cite

180

159

A novel optical beamformer concept is introduced that can be used for seamless control of the reception angle in broadband wireless receivers employing a large phased array antenna (PAA). The core of this beamformer is an optical beamforming network (OBFN), using ring resonator-based broadband delays, and coherent optical combining. The electro-optical conversion is performed by means of single-sideband suppressed carrier modulation, employing a common laser, Mach-Zehnder modulators, and a common optical sideband filter after the OBFN. The unmodulated laser signal is then re-injected in order to perform balanced coherent optical detection, for the opto-electrical conversion. This scheme minimizes the requirements on the complexity of the OBFN, and has potential for compact realization by means of full integration on chip. The impact of the optical beamformer concept on the performance of the full receiver system is analyzed, by modeling the combination of the PAA and the beamformer as an equivalent two-port RF system. The results are illustrated by a numerical example of a PAA receiver for satellite TV reception, showing that-when properly designed-the beamformer hardly affects the sensitivity of the receiver.

Section: Optical Beamforming Network Structurementioning

confidence: 99%

Section: Noisementioning

confidence: 99%

Novel Ring Resonator-Based Integrated Photonic Beamformer for Broadband Phased Array Receive Antennas—Part I: Design and Performance Analysis

Roeloffzen

et al. 2010

J. Lightwave Technol.

Self Cite

180

159

2008 IEEE Aerospace Conference

“…The first single-chip realization of an ORR-based OBFN, based on a 1×4 binary tree topology, was presented in [25], and later extended to a 1×8 OBFN [26], [27].…”

Section: Optical Beam Forming Networkmentioning

confidence: 99%

“…(This corresponds to waveguide group index of 1.8, and a ring circumference of 1.2 cm.) This was done by means of a network analyzer, using the phase shift method; details are given in [25]- [27]. The results for Output 2 to 8 are shown in Figure 19, and demonstrate the delay generation of one single ring up to seven cascaded rings, respectively.…”

Section: Optical Beam Forming Network Chipmentioning

confidence: 99%

Broadband Conformal Phased Array with Optical Beam Forming for Airborne Satellite Communication

Schippers

Verpoorte

Jorna

et al. 2008

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For enhanced communication on board an aircraft, novel antenna systems with broadband satellitebased capabilities are required. The technology will enhance airline operations by providing in-flight connectivity for flight crew information and will bring live TV and highspeed Internet connectivity to passengers. The installation of such systems on board an aircraft requires for aerodynamic reasons the development a very low-profile aircraft antenna, which can point to satellites anywhere in the upper hemisphere. To this end, phased array antennas which are conformal to the aircraft fuselage are attractive. In this paper, two key aspects of conformal phased array antenna arrays are addressed: the development of a broadband Ku-band antenna and an optical beam forming network for tracking satellites. The antenna elements of the conformal array are stacked patch antennas with dual linear polarization which have sufficient bandwidth. For tracking an optical circuit is proposed that consists of a cascade of optical ring resonators. 12

“…In the past we published several papers with measurements on TriPleX™ chips for optical beamformers, showing different parts of the functionality mentioned above. In [6] we presented group delay measurements on a three-ring optical delay device, followed by group delay measurements on single-chip realizations of 4 1 [7] and 8 1 OBFNs [8], and time domain measurements on a 2 1 OBFN [9]. In [10], [12] we presented magnitude response measurements on a chip in which an OSBF was integrated together with a 4 1 OBFN.…”

Section: Introductionmentioning

confidence: 99%

Novel Ring Resonator-Based Integrated Photonic Beamformer for Broadband Phased Array Receive Antennas—Part II: Experimental Prototype

Zhuang

Roeloffzen

et al. 2010

J. Lightwave Technol.

Self Cite

158

An experimental prototype is presented that illustrates the implementation aspects and feasibility of the novel ring resonator-based optical beamformer concept that has been developed and analyzed in Part I of this paper [1]. This concept can be used for seamless control of the reception angle in broadband wireless receivers employing a large phased array antenna (PAA). The design, fabrication, and characterization of a dedicated chip are described, in which an 8 1 optical beamforming network, an optical sideband filter for single-sideband suppressed carrier modulation, and a carrier re-insertion coupler for balanced optical detection are integrated. The chip was designed for satellite television reception using a broadband PAA, and was realized in a low-loss, CMOS-compatible optical waveguide technology. Tuning is performed thermo-optically, with a switching time of 1 ms. Group delay response and power response measurements show the correct operation of the OBFN and OSBF, respectively. Measurements on a complete beamformer prototype (including the electro-optical and opto-electrical conversions) demonstrate an optical sideband suppression of 25 dB, RF-to-RF delay generation up to 0.63 ns with a phase accuracy better than 10 radians, and coherent combining of four RF input signals, all in a frequency range of 1-2 GHz. Index Terms-CMOS-compatible optical waveguide technology, optical beamforming, optical ring resonators, phased array antennas, photonic integration, RF photonics. ).A. Leinse and R. G. Heideman are with LioniX B.V., 7500 AH Enschede, The Netherlands (e-mail: a.leinse@lionixbv.nl; r.g.heideman@lionixbv.nl).M. Hoekman is with LioniX B.V., 7500 AH Enschede, The Netherlands, and also with the After his Postdoc positions he applied his extensive know-how in the industry. Since 2001, he has been co-founder and CTO of LioniX B.V., Enschede, The Netherlands. He is an expert in the field of microsystem technology, in which he has more than twenty years of experience. He specializes in integrated optics, covering both (bio-)chemical sensing and telecom applications. He is (co)author of more than 100 papers, and holds more than twenty patents in the integrated optics field, on ten different subjects.Dr. Heideman participates in the Dutch IOP steering committee as well as several European projects.Wim van Etten (M'80-SM'91) was born in Zevenbergen, The Netherlands, in 1942. He received the M.Sc. and Ph.D. degrees in electrical engineering