Low-loss 1.3-/spl mu/m MQW electroabsorption modulators for high-linearity analog optical links

Loi, K.K.; Hodiak, J.H.; Mei, X.B.; Tu, C. W.; Chang, William S. C.; Nichols, D.; Lembo, Lawrence J.; Brock, John C.

doi:10.1109/68.726753

Cited by 19 publications

(8 citation statements)

References 7 publications

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“…Plakhotnik [9] has compared EO and ER modulators. Loi et al [13] have alluded to the superiority of linearized EA over unlinearized EO modulators. To our knowledge, no studies has ever compared all of them: unlinearized EO, linearized series EO, linearized parallel EO, linearized EA, and linearized ER.…”

Section: Introductionmentioning

confidence: 99%

Comparison and Linearization of LiNbO3 and Semiconductor Modulators

Chen¹

2001

Journal of Optical Communications

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Section: Introductionmentioning

confidence: 99%

Comparison and Linearization of LiNbO3 and Semiconductor Modulators

Chen¹

2001

Journal of Optical Communications

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“…The optical carrier from Laser 1 is purposely attenuated in order not to saturate the EAM. This carrier is modulated by a 0dBm, 500 MHz electrical signal (HP 83620A) via the 1.32mm MQW EAM 15 . The EAM has an equivalent V p of~1.26V at 0.8V bias and a 3-dBe bandwidth of~3.0 GHz.…”

Section: Experiments and Resultsmentioning

confidence: 99%

Single-sideband transmission using optical mixing in an electroabsorption modulator

Chang

2003

SPIE Proceedings

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Electroabsorption modulators (EAM) have been widely used in externally modulated RF link. In the conventional intensity modulation format, the RF efficiency of such link is critically dependent on the optical saturation of the EAM and the fiber dispersion. In an effort to minimize the dependence on these two factors, we have conducted an experimental study of an optical mixer that employs two heterodyned lasers to generate an optical local oscillator (LO). In contrast to the conventional schemes where both laser beams are launched into the same EAM, the EAM in the present scheme modulates only one of the laser beams. In this way, improvement in RF gain is obtained since it is not limited by the optical saturation of the EAM. The resulting optical spectrum shows that this scheme is equivalent to the optical single side band transmission. For sub-octave bandwidth applications, the dispersion effect in the fiber can be ignored.

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“…In the experiments, an anti-reflection coated strain-compensated InAsP-GaInP multiple-quantum-well (MQW) EA waveguide that utilizes the quantum-confined Stark effect (QCSE) was used [11]. The undoped electroabsorption layer was composed of 8 periods of 8.9-nm-thick compressively-strained InAsP wells and 7.4-nm-thick tensile-strained GaInP barriers, sandwiched by InGaAsP cladding layers.…”

Section: Experiments and Discussionmentioning

confidence: 99%

Optoelectronic RF signal mixing using an electroabsorption waveguide as an integrated photodetector/mixer

Shin

Sun

et al. 2000

IEEE Photon. Technol. Lett.

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Abstract-We demonstrate for the first time an electroabsorption (EA) waveguide utilized as an integrated photodetector/mixer for frequency conversion of radio frequency signals, through field-controlled absorption. Using an InAsP-GaInP multiple-quantum-well EA waveguide, a conversion loss of 18.9 dB was obtained at 10-mW optical local oscillator (LO) power, and a suboctave, two-tone spur-free dynamic range of 120.0 dB-Hz 4 5 was measured for an up-converted signal at 1.9 GHz. This scheme can be useful in antenna applications where optical LO signal distribution is used for frequency converting microwave signals.Index Terms-Electroabsorption, frequency conversion, optoelectronic mixer, radio-frequency signal mixing, spur-free dynamic range.

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Low-loss 1.3-/spl mu/m MQW electroabsorption modulators for high-linearity analog optical links

Cited by 19 publications

References 7 publications

Comparison and Linearization of LiNbO3 and Semiconductor Modulators

Comparison and Linearization of LiNbO3 and Semiconductor Modulators

Single-sideband transmission using optical mixing in an electroabsorption modulator

Optoelectronic RF signal mixing using an electroabsorption waveguide as an integrated photodetector/mixer

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