Polarization independent bidirectional fiber link using coherence multi/demultiplexing LiNbO/sub 3/ integrated electrooptical circuits

Hauden, J.; Porte, H.; Goedgebuer, J.-P.; Abiven, J.; Gibassier, C.; Gutiérrez‐Martínez, C.

doi:10.1109/50.507938

Cited by 11 publications

(2 citation statements)

References 18 publications

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“…However, this drift may exist as it is inherent to the kind of devices we used in our experimental work. To overcome the potential temperature dependence of the electro-optic crystals, polarization-independent electrooptic devices are being studied [17]. Such devices are much less polarization sensitive and can be promising to implement higher performance electric field sensing schemes.…”

Section: Resultsmentioning

confidence: 99%

An all-fibre and integrated optics electric field sensing scheme using matched optical delays and coherence modulation of light

Gutiérrez‐Martínez¹,

Santos-Aguilar²,

Ochoa-Valiente³

2007

Meas. Sci. Technol.

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Sensing electric fields occupying large bandwidths are interesting in practical applications related to natural phenomena and also in man-made hard electromagnetic industrial environments. In this work, an electric field sensor scheme, using coherence modulation of light, in an all-fibre configuration is described. The scheme uses lithium niobate (LiNbO3), integrated optics sensors. In a coherence modulation scheme, the LiNbO3 sensor detects the electric field and imprints it around an optical delay. The optical delay, acting as an information carrier, is transmitted through an optical fibre channel. At the receiver, light is demodulated by using a two-wave interferometer, introducing a second optical delay which is matched to the sensor's one. The demodulator can be implemented using either a second LiNbO3 crystal or an all-fibre optical retarder. Both alternatives are studied in this paper. The optical demodulator measures the optical autocorrelation around the optical delay and the electric field is recovered as a linear variation of the received optical power. Matching of the sensor and demodulator allows direct detection of the electric field, giving an unequal feature of an all-fibre scheme. The bandwidth of the sensing scheme is between 0 and 20 kHz.

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Section: Resultsmentioning

confidence: 99%

An all-fibre and integrated optics electric field sensing scheme using matched optical delays and coherence modulation of light

Gutiérrez‐Martínez¹,

Santos-Aguilar²,

Ochoa-Valiente³

2007

Meas. Sci. Technol.

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“…This co-located emitter-detector pair is surprisingly easy to manually align with inexpensive large core POF. We note that other bidirectional single-fiber designs require either the optoelectronic device (emitter /detector) to be biased differently to transmit or receive, or waveguide splitters to be used to separate the emitter and the detector at each end of the fiber [4]-161. The combination of co-location of the emitter and the detector, which eliminates the need for splitters, and the use of a single large core fiber, which provides good coupling alignment tolerance between the emitter and the fiber, leads to a low cost, bi-directional link design.…”

Section: Introductionmentioning

confidence: 99%

Coupling efficiency of an alignment-tolerant, single fiber, bi-directional link

Wang

Cross

Chai

et al.

1997 Proceedings 47th Electronic Components and Technology Conference

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In this paper, we present a novel Fourier technique to calculate the emitter-to-fiber coupling efficiency between an incoherent source of arbitrary directivity and a multimode fiber. The technique expresses the 4-D integral that describes the coupling as a 2-D sum, and along with Fourier series expansion, the technique increases greatly the computational speed of emitter-to-fiber coupling calculations. We have simulation results of the emitter-to-fiber coupling analysis and coupling analysis for a single-fiber bi-directional link total using the Fourier technique. The results show that the large core plastic optical fiber gives rise to good emitter-tofiber coupling alignment tolerance, but tends to overfill the detector and cause degradation in fiber-to-detector alignment tolerance. We find that a more directive resonant-cavity light emitting diode only improves emitter-to-fiber alignment tolerance slightly, though it can couple more light into the fiber.

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Polarisation-independent Er:Ti:LiNbO3 waveguide amplifier pumped by a laser diode at 980 nm

1998

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Polarization independent bidirectional fiber link using coherence multi/demultiplexing LiNbO/sub 3/ integrated electrooptical circuits

Cited by 11 publications

References 18 publications

An all-fibre and integrated optics electric field sensing scheme using matched optical delays and coherence modulation of light

An all-fibre and integrated optics electric field sensing scheme using matched optical delays and coherence modulation of light

Coupling efficiency of an alignment-tolerant, single fiber, bi-directional link

Polarisation-independent Er:Ti:LiNbO3 waveguide amplifier pumped by a laser diode at 980 nm

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