Journal ArticleDOI
Efficient optical waveguide switch/amplitude modulator
R V Schmidt,P S Cross +1 more
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TLDR
An electro-optical, directional coupler switch is demonstrated that requires only a 3-V drive and operates at data rates in excess of 100 Mbit/sec and has an extinction ratio of 13 dB and a 1-mW/M bit/sec figure of merit.Abstract:
An electro-optical, directional coupler switch is demonstrated that requires only a 3-V drive. Used as an amplitude modulator, the device operates at data rates in excess of 100 Mbit/sec (return-to-zero format) and has an extinction ratio of 13 dB and a 1-mW/Mbit/sec figure of merit.read more
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Journal ArticleDOI
Finite-element solution of integrated optical waveguides
B. M. A. Rahman,J.B. Davies +1 more
TL;DR: In this paper, a vector H -field finite-element method has been used for the solution of optical waveguide problems, where the permittivity of the guiding structures can be an arbitrarily tensor, only limited to being lossless.
Journal ArticleDOI
Guided-wave devices for optical communication
TL;DR: In this paper, the current status of guided-wave optical communication devices is reviewed and the operation and presently demonstrated performance characteristics of waveguides switches, modulators, filters and polarization transforming devices are discussed.
Journal ArticleDOI
Characteristics of Ti-diffused lithium niobate optical directional couplers
TL;DR: The dependence of the coupling strength of titanium-diffused lithium niobate directional couplers upon fabrication parameters and guided wavelength has been investigated and good comparison was obtained with theoretical results calculated using an effective index method.
Journal ArticleDOI
Directional coupler switches, modulators, and filters using alternating Δβ techniques (Invited Paper)
R.L. Schmidt,R. Alferness +1 more
TL;DR: The principles of operation and current status of single-mode optical directional coupler switches, modulators, and filters using \Delta \beta reversal techniques are reviewed in this paper, where the same authors also present a review of the current state of the optical coupler switch design.
Journal ArticleDOI
Picosecond optical sampling
TL;DR: In this article, a high speed sampling technique using a cascade of optical waveguide interferometers driven by CW sinusoidal traveling or standing microwaves is proposed, where each interferometer multiplies the optical signal by a function closely approximated by ω, where ω is the frequency of its microwave drive.
References
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Journal ArticleDOI
Switched directional couplers with alternating ΔΒ
H. Kogelnik,R. Schmidt +1 more
TL;DR: Coupled waveguide structures with sections of alternating phase mismatch are proposed as switched directional coupler configurations in which complete conversion of light from one guide to the other can be achieved by an electrical adjustment.
Journal ArticleDOI
Electro‐optically switched coupler with stepped Δβ reversal using Ti‐diffused LiNbO3 waveguides
R. V. Schmidt,H. Kogelnik +1 more
TL;DR: In this article, an experimental electro-optical switched directional coupler is reported which is formed in LiNbO3 by diffused Ti strip waveguides and uses stepped reversed phase mismatching to provide electrical adjustment of both switch states.
Journal ArticleDOI
Efficient strip-waveguide modulator
TL;DR: In this article, a strip-waveguide electrooptic phase modulator has been fabricated in Ti-diffused LiNbO3 for a modulation index of 1 rad at 0.63 μm, the modulating voltage is 0.3 V and the power is 1.7 μW/MHz.
Journal ArticleDOI
Experimental 4×4 optical switching network
R.V. Schmidt,Lawrence L. Buhl +1 more
TL;DR: In this article, an optical waveguide 4×4 switching network fabricated by integrating five switched directional couplers with stepped reversal on a single LiNbO3 substrate was reported, where the maximum crosstalk observed on any output waveguide was down by 18 dB.
Journal ArticleDOI
Flip-chip approach to endfire coupling between single-mode optical fibres and channel waveguides
H.P. Hsu,A.F. Milton +1 more
TL;DR: In this article, the authors report a practical approach to the positioning of a number of single-mode fibres for end-fire coupling to channel waveguides, which has been extended to a flip-chip configuration which permits its use with substrates other than silicon.
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Electro‐optically switched coupler with stepped Δβ reversal using Ti‐diffused LiNbO3 waveguides
R. V. Schmidt,H. Kogelnik +1 more