X-cut lithium niobate optical single-sideband modulator

Higuma, Kaoru; Oikawa, Satoshi; Hashimoto, Y.; Nagata, Hirotoshi; Izutsu, Masayuki

doi:10.1049/el:20010342

Cited by 83 publications

(34 citation statements)

References 2 publications

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“…Two sub Mach-Zehnder structures should be in null-bias point. An SSB suppressedcarrier signal, comprising one of the sideband components (USB or LSB), can be generated, when the optical phase difference induced by RF C (φ FSK , henceforth) is ±90 • [5]. Thus, the optical frequency of output lightwave can be switched by changing the induced phase at RF C .…”

Section: Optical Fsk Modulatormentioning

confidence: 99%

Optical FSK transmission with group delay compensated balance detection

Kawanishi

Fujita

Higuma

et al. 2005

IEICE Electron. Express

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A novel balance detection scheme for high-speed optical frequency-shift-keying (FSK) transmission was proposed. Fiber dispersion can be compensated by a balanced photodetector with an optical delay. 10 Gbit/s optical FSK transmission over a 130 km single mode fiber was demonstrated, where the FSK signal was generated by using a LiNbO 3 high-speed optical FSK modulator. Keywords: optical modulation, frequency shift keying, balanced detection, group delay Classification: Photonics devices, circuits, and systems References[1] J. J. Vegas Olmos, I. Tafur Monroy, and A. M. J. Koon, "High bit-rate combined FSK/IM modulated optical signal generation by using GCSR tunable laser sources,"

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Section: Optical Fsk Modulatormentioning

confidence: 99%

Optical FSK transmission with group delay compensated balance detection

Kawanishi

Fujita

Higuma

et al. 2005

IEICE Electron. Express

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“…1. The device structure is almost the same in the SSB modulator, but the FSK modulator has an electrode (RF C ) for high-speed FSK signal, instead of an dc-bias electrode in the SSB modulator [6,7]. When we apply a pair of rf-signals, which are of the same frequency f m and have a 90 • phase difference, to the electrodes RF A and RF B , frequency shifted lightwave can be generated at the output port of the modulator.…”

Section: Optical Fsk Modulatormentioning

confidence: 99%

“…Recently, however, we reported wavelength conversion by using an optical single-sideband (SSB) modulator consisting of four optical phase modulators [6,7]. The wavelength of the output lightwave depends on rf-signal frequency and dc-bias voltage fed to the modulator, which can be electronically controlled.…”

Section: Introductionmentioning

confidence: 99%

Optical FSK/IM Signal Generation Using an Integrated Optical FSK Modulator

Kawanishi

Higuma

Fujita

et al. 2004

IEICE Electron. Express

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Abstract:We demonstrate simultaneous optical modulation by frequency shift keying (FSK) and intensity modulation (IM) using a newly developed high-speed FSK modulator, for optical packet systems where payload and label signals are, respectively, in IM and FSK format. The modulator consists of four optical phase modulators, with travelingwave electrodes to obtain high-speed frequency switching and large frequency deviation in FSK modulation.

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“…The latter is called as phase-shift method [5]. Higuma et al first demonstrated the carrier suppressed optical SSB (SSB-SC) modulation by phase shift method using LiNb03 (LN) vector modulator and reported high sideband suppression [6]. However, high peak-to-average power ratio (P APR) of optical SSB-SC signal becomes a major drawback in fiber transmission [7].…”

mentioning

confidence: 99%