Abstract
A physical model-based simulation is conducted to investigate the design of an efficient high-speed quantum-well waveguide-photodetector (WGPD). The WGPD structure is optimized in terms of photoabsorber thickness, i-region thickness, cladding doping and thickness. The carrier transit-time and device capacitance effect are reduced for a WGPD by employing a \(\le\) 50 nm thin-photoabsorber in a 0.66 \(\mu\)m thick i-region design. A three-fold improvement in responsivity up to 0.82 A/W is obtained by using two graded-index layers. The accurately positioned TPA layer in a thick i-region can provide up to 50 % increase in bandwidth of 65 GHz for a 25 \(\mu\)m long WGPD. The optimized WGPD design can achieve 3-dB bandwidth over 80 and 50 GHz for 25 and 50 \(\mu\)m long WGPD, respectively. The device satisfies the requirements of high-speed, low dark current, high responsivity, and integration capabilities, which is an essential prerequisite for high-performance detectors in future optical communication systems.
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References
Adachi, S.: Physical Properties of III-V Semiconductor Compounds: InP, InAs, GaAs, GaP, InGaAs and InGaAsP, Nashville. TN: John Wiley & Sons, USA (1992)
Beling, A., Campbell, J.C.: InP-Based High-Speed Photodetectors. J. Lightwave Technol. 27(3), 343–355 (2009)
Bhattacharya, P.: Semiconductor Optoelectronic Devices, Englewood Cliffs. Prentice-Hall, NJ (1994)
Bowers, J.E., Burrus, C.A.: Ultrawide-band long-wavelength p-i-n photodetectors. J. Lightw. Technol 5, 1339–1350 (1987)
David, M., Yao, J., Capmany, J.: Integrated microwave photonics. Nature photonics 13, 80–90 (2019)
Ghione, G.: Semiconductor devices for high-speed optoelectronics. Cambridge University Press, Cambridge, England (2010)
Goldberg, Y.A., Schmidt, N.M.: Handbook series on semiconductor parameters 1, 191–213 (1999)
Ho, W.-J., Dai, T.-A., Chuang, Z.-M., Lin, W., Tu, Y.-K., Wu, M.-C.: InGaAs PIN photodiodes on semi-insulating InP substrates with bandwidth exceeding 14 GHz. Solid State Electron. 38(7), 1295–1298 (1995)
Kato, K.: 110-GHz, 50 %-efficiency mushroom-mesa waveguide pin photodiode for a 1.55-um wavelength. IEEE Photon. Technol. Lett. 6, 719–721 (1994)
Malik, D., Das, U.: A novel highly-efficient compact 3D-spot size converter using quantum-well intermixing. J. Lightwave Technol. 40(16), 5615–21 (2022)
Pearsall, T.: Electronic Structure of GaInAsP Alloys Lattice-matched to InP. John Wiley & Sons, UK (1982)
SILVACO, Inc.: ATLAS user’s manual, Santa Clara, CA, (2016)
Sotoodeh, M., Khalid, A.H., Rezazadeh, A.A.: Empirical low-field mobility model for III-V compounds applicable in device simulation codes. J. Appl. Phys. 87(6), 2890–2900 (2000)
Nagatsuma, T.: Photonic measurement technologies for high-speed electronics. Meas. Sci. Technol. 13(11), 1655–1663 (2002)
Weber, J.-P.: Optimization of the carrier-induced effective index change in InGaAsP waveguides-application to tunable Bragg filters. IEEE J. Quantum Electron. 30(8), 1801–1816 (1994)
Wey, Y.-G.: 110-GHz GalnAs/InP double heterostructure p-i-n photo detectors. Lightwave Technol 13, 1490–1499 (1995)
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Conceptualization, investigation and writing: Dharmander Malik, Supervision: Utpal Das.
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Malik, D., Das, U. Design and modeling of an efficient high-speed InGaAs/InP QW waveguide-photodetector. Opt Quant Electron 55, 353 (2023). https://doi.org/10.1007/s11082-023-04619-w
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DOI: https://doi.org/10.1007/s11082-023-04619-w