Slotless dispersion-flattened waveguides with more than five zero-dispersion wavelengths

Jialang Zhang; Siyuan Zhang; Junna Yao; Xinhua Jiang; Anting Wang; Qiwen Zhan

doi:10.3788/COL202321.101302

Journals >Chinese Optics Letters >Volume 21 >Issue 10 >Page 101302 > Article

Chinese Optics Letters
Vol. 21, Issue 10, 101302 (2023)

Slotless dispersion-flattened waveguides with more than five zero-dispersion wavelengths

Jialang Zhang¹, Siyuan Zhang¹, Junna Yao¹, Xinhua Jiang¹, Anting Wang^1、*, and Qiwen Zhan²

Author Affiliations

¹Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei 230026, China

²School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China

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DOI: 10.3788/COL202321.101302 Cite this Article Set citation alerts

Jialang Zhang, Siyuan Zhang, Junna Yao, Xinhua Jiang, Anting Wang, Qiwen Zhan. Slotless dispersion-flattened waveguides with more than five zero-dispersion wavelengths[J]. Chinese Optics Letters, 2023, 21(10): 101302 Copy Citation Text

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Fig. 1. Structure diagram of the dispersion-flattened waveguide.

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(a)–(c) Principle of dispersion flattening for the proposed waveguides; optical intensity distribution of the guided mode at (d) 2500 nm; (e) 3500 nm; (f) 4500 nm; (g) 5500 nm.

Fig. 2. (a)–(c) Principle of dispersion flattening for the proposed waveguides; optical intensity distribution of the guided mode at (d) 2500 nm; (e) 3500 nm; (f) 4500 nm; (g) 5500 nm.

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Fig. 3. Ultraflat dispersion and confinement loss of the guided mode of (a) WG1 and (b) WG2; mode concentration in upper strip, lower strip, and slab layer of (c) WG1 and (d) WG2.

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Fig. 4. Dispersion profile of WG1 with different structural parameters changed by 1% each time around the optimum values. (a) Different W, (b) different H₁, (c) different H₂, and (d) different H₃.

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Fig. 5. (a) Mode overlap factor with one mode located at 3300 nm, A_eff, and γ of WG1; (b) mode overlap factor with one mode located at 4140 nm, A_eff, and γ of WG2.

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Year	ZDW	Dispersion (ps/(nm·km))	Wavelength (nm)	Flatness (nm²·km/ps)
2016^[21]	4	−15.87 to 11.34	1520–2320	29.40
2016^[21]	4	−4.73 to 5.69	1660–3290	156.73
2018^[9]	4	−16 to 32	3500–10,000	135.42
2018^[22]	5	−18 to 14	2600–15,500	403.13
2019^[12]	4	−0.98 to 0.98	1670–2245	293.37
2021^[6]	2	−24.13 to 71.17	1000–3500	26.23
2022^[23]	1	0 to 27	1290–4570	121.48
2022^[24]	4	−1 to 1	1810–3630	910
This work	6	−1.2 to 1.1	1980–4880	1260.87
This work	5	−0.472 to 0.365	2885–5550	3183.99