Optimisation of electro-optic crystal modulators

Kalymnios, D.

doi:10.1049/el:19700554

Cited by 6 publications

(3 citation statements)

References 3 publications

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“…More than thirty years ago, a novel cut of crystal is proposed for the maximum phase retardation or the minimum halfwave voltage 11,12 . The half-wave voltage for the optimum cut of modulation with aspect ratio of unity is 50% smaller than that of the previously considered the most favorable configuration (E // z; light // x or y) with electro-optic coefficient 33 γ 13,14 .…”

Section: The Transverse Electro-optical Effect Corresponding To Optimmentioning

confidence: 99%

High-performance electro-optically tunable birefringent interleaver filters

Zhang

Liu

Zhou

et al. 2004

Novel Optical Systems Design and Optimization VII

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Tunable interleaver filters are very important in DWDM applications. To be effective, it is required that the filters must possess wide passband (or stopband) width, high isolation, small channel spacing, high tuning speed an so on simultaneously. Whereas, for the small birefringence of all the natural crystals and synthesized crystals, it is quite difficult for the available birefringent interleavers to have the channel spacing smaller than 50GHz and other properties mentioned above simultaneously. This paper proposes a novel electro-optically tunable birefringent interleaver filter, which solves the problem successfully. It is based on cascaded analog birefringent structures. The filter of this configuration can achieve small channel spacing (≤50GHz), wide passband and stopband width (>1/5 period) and high isolation (<-30dB). When voltage is applied on electro-optical crystal plates in analog birefringent structures, the filter also possesses the function of high-speed (submicrosecond) center-frequency tunability simultaneously. A most efficient electro-optic configuration, which needs the lowest operating voltage and has not walk-off effect of extraordinary ray in the crystals, is proposed and analyzed. A prototypical experiment verifies the electro-optic tunability of this filter as well.

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Section: The Transverse Electro-optical Effect Corresponding To Optimmentioning

confidence: 99%

High-performance electro-optically tunable birefringent interleaver filters

Zhang

Liu

Zhou

et al. 2004

Novel Optical Systems Design and Optimization VII

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“…This figure also suggests that devices with coarse electrode pitch (ie small inter-order angles) can still be useful as Q-switches provided they operate at twice or three times the zero-order extinction voltage. TIR devices can be constructed using other electro-optic crystals and possibly with orientations that exhibit maximum electro-optic effect (Kalymnios 1970). Switching times of the order of 5-20 ns are appropriate for most lasers, and this should be easily obtained with TIR devices, provided the electrode area (and hence capacitance) is kept to a minimum.…”

Section: L80mentioning

confidence: 99%

An LiNbO3 TIR modulator as Q-switch

Kalymnios

Scibor-Rylski

1974

J. Phys. D: Appl. Phys.

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“…The electrically induced phase retardation AI' is calculated following t.he method outlined by Kalymnios [6]. The equation for the index ellipsoid, including terms due to the electrooptic coefficients rzr, rS1, rsa, and rI3 of LiNbOI* is written in the crystallographic axes [7] and transformed to a set of axes X , X S , and X,, defined as follows.…”

Section: A I ' = -Q Tlementioning

confidence: 99%