© The Institution of Engineering and Technology
The authors introduce four kinds of terahertz photonics components based on photonic integrated circuits (PICs). A PIC-based integrated optoelectronic synthesiser for THz communications is described, which can be tuned continuously over the range 0.254–2.723 THz using photomixing. A laterally-coupled dual-grating distributed feedback laser (DFB) diode integrated with an electroabsorption modulator is used to generate an 820 GHz beat signal. THz signal production is reported using a dual-wavelength DFB diode laser with a two-section phase-shifted sampled Bragg grating. Finally, a THz source at 640 GHz, based on a sampled grating distributed Bragg reflector semiconductor mode-locked laser diode, is reported offering superior reproducibility, controllability, and a wider operation range than other reported mode-locked THz laser diodes. Each of these sources is a monolithic construction emitting light at 1.5 µm. The light can be amplified in an erbium-doped fibre amplifier, delivered over silica optical fibre and used to generate THz radiation via a photodiode antenna or photoconductive antenna in a remote location.
References
-
-
1)
-
25. Song, H.-J., Ajito, K., Muramoto, Y., et al: ‘Uni-travelling-carrier photodiode module generating 300 GHz power greater than 1 mW’, IEEE Microw. Wirel. Compon. Lett., 2012, 22, (7), pp. 363–365.
-
2)
-
23. Arahira, S., Matsui, Y., Ogawa, Y.: ‘Mode-locking at very high repetition rates more than terahertz in passively mode-locked distributed-Bragg-reflector laser diodes’, IEEE J. Quantum Electron., 1996, 32, (7), pp. 1211–1224.
-
3)
-
13. Hou, L., Haji, M., Qiu, B., et al: ‘Mode-locked laser array monolithically integrated with MMI combiner, SOA, and EA modulator’, IEEE Photonics Technol. Lett., 2011, 23, (15), pp. 1064–1066.
-
4)
-
9. Hou, L., Haji, M., Eddie, I., et al: ‘Laterally-coupled dual-grating distributed feedback lasers for generating mode-beat terahertz signals’. Conf. on Lasers and Electro-Optics, San Jose, CA, USA, 2015, (.
-
5)
-
21. Tang, S.: ‘InP-based semiconductor lasers with novel sampled Bragg gratings and applications’, , University of Glasgow, 2019.
-
6)
-
5. Yang, S.-H., Watts, R., Li, X., et al: ‘Tunable terahertz wave generation through a bimodal laser diode and plasmonic photomixer’, Opt. Express, 2015, 23, (24), pp. 31206–31215.
-
7)
-
2. Hangyo, M., Nagashima, T., Nashima, S.: ‘Spectroscopy by pulsed terahertz radiation’, Meas. Sci. Technol., 2002, 13, (11), p. 1727.
-
8)
-
17. Mori, T., Kawaguchi, H.: ‘Characteristics of nondegenerate four-wave mixing in electroabsorption modulator’, Appl. Phys. Lett., 2004, 85, (6), pp. 869–871.
-
9)
-
4. Tani, M., Gu, P., Hyodo, M., et al: ‘Generation of coherent terahertz radiation by photomixing of dual-mode lasers’, Opt. Quantum Electron., 2000, 32, (4), pp. 503–520.
-
10)
-
15. Report ITU-R SM.2352-0: ‘Technology trends of active services in the frequency range 275-3 000 GHz’ (, Geneva, 2015).
-
11)
-
7. Osborne, S., O'Brien, S., Buckley, K., et al: ‘Two-colour Fabry–Perot laser with terahertz primary mode spacing’, Electron. Lett., 2007, 43, (4), pp. 224–225.
-
12)
-
18. Yang, Z., Mutter, L., Stillhart, M., et al: ‘Large-size bulk and thin-film stilbazolium-salt single crystals for nonlinear optics and THz generation’, Adv. Funct. Mater., 2007, 17, (13), pp. 2018–2023.
-
13)
-
6. Hou, L., Haji, M., Eddie, I., et al: ‘Laterally coupled dual-grating distributed feedback lasers for generating mode-beat terahertz signals’, Opt. Lett., 2015, 40, (2), pp. 182–185.
-
14)
-
10. Tang, S., Hou, B., Liang, S., et al: ‘Terahertz signal generation based on a dual-mode 1.5 µm DFB semiconductor laser’. Conf. on Lasers and Electro-Optics/Pacific Rim, Hong Kong, 2018, (.
-
15)
-
22. Shimizu, T., Ogura, I., Yokoyama, H.: ‘860 GHz rate asymmetric colliding pulse modelocked diode lasers’, Electron. Lett., 1997, 33, (22), pp. 1868–1869.
-
16)
-
1. Zhang, X.: ‘Terahertz wave imaging: horizons and hurdles’, Phys. Med. Biol., 2002, 47, (21), p. 3667.
-
17)
-
8. Xu, J., Hou, L., Deng, Q., et al: ‘Fully integrated multi-optoelectronic synthesizer for THz pumping source in wireless communications with rich backup redundancy and wide tuning range’, Sci. Rep., 2016, 6, p. 29084.
-
18)
-
16. Klehr, A., Fricke, J., Knauer, A., et al: ‘High-power monolithic two-mode DFB laser diodes for the generation of THz radiation’, IEEE J. Sel. Top. Quantum Electron., 2008, 14, (2), pp. 289–294.
-
19)
-
11. Hou, L., Haji, M., Marsh, J.H.: ‘Mode locking at terahertz frequencies using a distributed Bragg reflector laser with a sampled grating’, Opt. Lett., 2013, 38, (7), pp. 1113–1115.
-
20)
-
3. Hu, B., Nuss, M.: ‘Imaging with terahertz waves’, Opt. Lett., 1995, 20, (16), pp. 1716–1718.
-
21)
-
20. Gupta, A., Rana, G., Bhattacharya, A., et al: ‘Enhanced optical-to-THz conversion efficiency of photoconductive antenna using dielectric nano-layer encapsulation’, APL Photonics, 2018, 3, (5), p. 051706.
-
22)
-
12. Hou, L., Hou, B., Liang, S., et al: ‘Generation of THz radiation by sampled grating DFB mode locked laser diodes’. Conf. on Lasers and Electro-Optics/Pacific Rim, Hong Kong, 2018, (.
-
23)
-
19. Shi, Y., Li, S., Chen, X., et al: ‘High channel count and high precision channel spacing multi-wavelength laser array for future PICs’, Sci. Rep., 2014, 4, p.7377.
-
24)
-
14. Hou, L., Stolarz, P., Javaloyes, J., et al: ‘Subpicosecond pulse generation at quasi-40-GHz using a passively mode-locked AlGaInAs–InP 1.55 μm strained quantum-well laser’, IEEE Photonics Technol. Lett., 2009, 21, (23), pp. 1731–1733.
-
25)
-
24. Yanson, D.A., Street, M.W., McDougall, S.D., et al: ‘Ultrafast harmonic mode-locking of monolithic compound-cavity laser diodes incorporating photonic-bandgap reflectors’, IEEE J. Quantum Electron., 2002, 38, (1), pp. 1–11.
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