Compact and Low Power Consumption 1.55-μm Electro-Absorption modulator integrated DFB-LD TOSA for 10-Gbit/s 40-km Transmission

Yamamoto, Hiroshi; Hirai, M.; Kagaya, Osamu; Nogawa, Kenta; Naoe, Kazuhiko; Sasada, Noriko; Okayasu, M.; Makino, Shigeki; Shinoda, Kazunori; Kitatani, T.; Tanaka, Shigehisa

doi:10.1364/ofc.2009.otht5

Cited by 7 publications

(4 citation statements)

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“…Various types of highspeed EAM and EAM-integrated distributed feedback LD based on InP-related compound semiconductors have been developed so far. [3][4][5][6][7][8][9][10][11][12] EAMs for four-level pulse amplitude modulation (PAM4) and PAM8 formats have also been demonstrated. [13][14][15][16][17] On the other hand, devices based on multimode interference (MMI) waveguides 18) are utilized for passive 3-dB couplers, [19][20][21] LDs, 22,23) optical path switches, [24][25][26] splitting ratio-tunable couplers, 27) and polarization beam splitters.…”

Section: Introductionmentioning

confidence: 99%

Proposal of compact multimode interference optical modulator with high extinction ratio

Kanesaka

ARAKAWA

2022

Jpn. J. Appl. Phys.

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We proposed a compact 1×1 multimode interference (MMI) optical modulator with a high extinction ratio. A triply coupled quantum well structure is designed for the core layer for the enhancement of the quantum-confined Stark effect, and the MMI waveguide with isolation trenches is symmetrically designed. The length of the MMI modulator is reduced by 30%, and the wavelength dependence was reduced compared with that observed in the previously reported MMI modulator. Owing to both the electroabsorption effect and the electric-field induced refractive index change in a multiple-quantum-well core layer, the extinction ratio is expected to be approximately 45 dB at an operating voltage of 3.3 V.

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Section: Introductionmentioning

confidence: 99%

Proposal of compact multimode interference optical modulator with high extinction ratio

Kanesaka

ARAKAWA

2022

Jpn. J. Appl. Phys.

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“…To date, there have been developed many types of high-speed EAMs and modules based on InGaAsP 3,4) and InGaAlAs with a larger conduction band offset. [5][6][7][8][9][10][11] Lately EAMs for pulse amplitude modulation have also been demonstrated. 12,13) Most of the EAMs are integrated with distributed feedback lasers which are also known as electroabsorption (EA) modulatorlasers.…”

Section: Introductionmentioning

confidence: 99%

Proposal and simulated characteristics of high-extinction-ratio electroabsorption modulator based on multimode interference waveguide

Yamashina¹,

Arakawa²

2019

Jpn. J. Appl. Phys.

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We proposed an electroabsorption modulator (EAM) based on a 1 × 1 multimode interference waveguide (MMI-EAM). A partial electroabsorption (EA) region is asymmetrically placed in a MMI. In a multiple quantum well core layer of the region, the electrorefractive index change is also exhibited in addition to the EA effect, which leads to change in the position of a self-image at the output port of the MMI waveguide. Owing to the combination of the EA effect and change in electrorefractive index, the extinction ratio is significantly improved compared with a conventional EAM with almost the same area of the EA region. We discuss the optimization of the MMI-EAM structure and investigate its modulation characteristics theoretically using the beam propagation method. The results show that the extinction ratio can be increased by 25 dB in the MMI-EAM with the length of 152 μm and the width of 6 μm.

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“…EMLs appear as one mature solution for high-speed optical transmitters [4]- [6] thanks to their compactness, high speed and ease of operation characteristics. Nevertheless, transmission distance obtained with EML in anomalous dispersion fibers such as Standard Single Mode Fibers (SSMFs) is still limited by signal distortions resulting from modulator positive chirp at low bias.…”

Section: Introductionmentioning

confidence: 99%

ElectroAbsorption Modulated Laser Integrated with a Semiconductor Optical Amplifier for 100-km 10.3 Gb/s Dispersion-Penalty-Free Transmission

Ngô

Nguyen

Gosset

et al. 2013

J. Lightwave Technol.

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We report, for the first time, a transmission experiment over standard fiber at 1.55 m using an electroabsorption modulated laser (EML) integrated with a semiconductor optical amplifier (SOA). We show clearly that negative pre-chirped signals can be obtained by adjusting both modulator and amplifier driving parameters. Negative chirp operation is evaluated through small-signal chirp measurement as well as through time-resolved dynamic chirp measurement. Signal chirp control at emission enhances transmission and increases optical reach. Thanks to the SOA gain and chirp compensation for modulator loss and chirp, dispersion-penalty-free with clear open eye diagrams over 100 km of optical fiber at 10.3 Gb/s is achieved. A transmission up to 125 km is also obtained. This novel fully integrated EML-SOA is very promising as a high-performance, compact and low-cost optical transmitter for the future access-metropolitan network convergence.

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Compact and Low Power Consumption 1.55-μm Electro-Absorption modulator integrated DFB-LD TOSA for 10-Gbit/s 40-km Transmission

Cited by 7 publications

References 0 publications

Proposal of compact multimode interference optical modulator with high extinction ratio

Proposal of compact multimode interference optical modulator with high extinction ratio

Proposal and simulated characteristics of high-extinction-ratio electroabsorption modulator based on multimode interference waveguide

ElectroAbsorption Modulated Laser Integrated with a Semiconductor Optical Amplifier for 100-km 10.3 Gb/s Dispersion-Penalty-Free Transmission

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