ridge waveguide

ridge waveguide

[′rij ′wāv‚gīd]
(electromagnetism)
A circular or rectangular waveguide having one or more longitudinal internal ridges that serve primarily to increase transmission bandwidth by lowering the cutoff frequency.
References in periodicals archive ?
Mitsubishi Electric developed the antenna with Hiroshima Institute of Technology, and received support from the Japan Science and Technology Agency's A-STEP program under a project entitled "Development of a novel resin ridge waveguide antenna with eminent low sidelobe."
Mitsubishi Electric developed the antenna with Hiroshima Institute of Technology, and received support from the Japan Science and Technology Agency's A-STEP program under a project entitled "Development of a novel resin ridge waveguide antenna with eminent low sidelobe." For the project, a large-scale array antenna prototype consisting of about 2,000 elements was manufactured and evaluated.
The waveguide width is 450 nm, the ridge waveguide height is 220 nm, the planar waveguide height is 50 nm, the gap between waveguide and micro-ring is 200 nm, the micro-ring radius is 10 [micro]m, the doping concentration of P+ region is 1 x [10.sup.19] [cm.sup.-3], the doping concentration of N+ region is 1 x [10.sup.19] [cm.sup.-3], and the doping concentration of I region is 1 x [10.sup.15] [cm.sup.-3].
Zhang, "Canonical ridge waveguide filters in LTCC or metallic resonators," IEEE Transactions on Microwave Theory and Techniques, vol.
Sun et al., "Optical properties of Er(DBM)3Phen-doped polymer and fabrication of ridge waveguide," Optics Communications, vol.
Usually it is assumed that no higher-order mode is excited when light propagates along a long bi-level taper, so that one achieves a low-loss smooth transition between the fundamental mode of the SOI ridge waveguide and that of the silicon strip waveguide.
In [11,12], a single asymmetric ridge waveguide is used for linear arrays to achieve close element spacing in the scan plane and avoid grating lobes.
Among these the most popular and well investigated are the loop transitions [1-3] and the stepped or linearly tapered ridge waveguide sections [4,5].
Vardaxoglou, "A 3rd Order Ridge Waveguide Filter with Parallel Coupled Resonators," IEEE MTT-S International Microwave Symposium Digest, Fort Worth, TX, 2004, pp.
Centerpiece of the laser system is a micro-integrated ECDL MOPA that was developed and implemented by the FBH, with an ECDL acting as local oscillator (master oscillator, MO) and a ridge waveguide semiconductor amplifier as power amplifier (PA).
The company said the P2IC design platform combines polymer photonics with silicon photonics that addresses the desires of the telecom and datacom industries by utilizing high-speed ridge waveguide and slot waveguide modulator designs.
Cappuzzo, "Distributed feedback ridge waveguide lasers fabricated by nanoscale printing and molding on nonplanar substrates," Applied Physics Letters, vol.