Applying sacrificial substrate technology to miniaturized precision optical thin-film coatings

Rüsseler, Anna Karoline; Carstens, Florian; Jensen, Lars; Bengsch, Sebastian; Ristau, Detlev

doi:10.1117/12.2597003

Cited by 3 publications

(3 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For the application discussed in this paper, we estimate a yield of about 79,000 filters per coating run due to the requirements regarding the spectral position of the passband. We have demonstrated that different edge lengths of the elements between 25 µm and 1 mm are also possible, depending on the IBS coating thickness [13]. The removal of the sacrificial substrate completes the miniaturization by significantly reducing the thickness.…”

Section: Filter Miniaturization and Transfer To Tapementioning

confidence: 95%

“…In this contribution, we report on the production process for substrate-free CWDM filters based on a cost-efficient sacrificial polymer layer, which completely dissolves in water [13], and analyze the filter transmission performance in comparison to filters on thin polymeric substrates as well as the deformation induced by coating stress. The filters are designed for direct insertion between cleaved fiber ends without additional elements.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Substrate-free miniaturized thin-film filters for single-element coarse wavelength division multiplexing fibers

Rüsseler

Gehrke²,

Carstens³

et al. 2023

Appl. Opt.

Self Cite

View full text Add to dashboard Cite

We have created high-precision, miniaturized, substrate-free filters, based on ion beam sputtering on a sacrificial substrate. The sacrificial layer is cost efficient and environmentally friendly and can be dissolved using only water. We demonstrate an improved performance compared to filters on thin polymer layers from the same coating run. With these filters, a single-element coarse wavelength division multiplexing transmitting device for telecommunication applications can be realized by inserting the filter between fiber ends.

show abstract

Section: Filter Miniaturization and Transfer To Tapementioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Substrate-free miniaturized thin-film filters for single-element coarse wavelength division multiplexing fibers

Rüsseler

Gehrke²,

Carstens³

et al. 2023

Appl. Opt.

Self Cite

View full text Add to dashboard Cite

show abstract

“…We have demonstrated possible edge lengths of the elements between 25 µm and 2 mm [6]. For the given EOM, we chose an edge length of 500 µm.…”

Section: Substrate-free Thin-film Miniaturizationmentioning

confidence: 99%

Integrable thin-film Fabry-Pérot type electro-optic modulator

Rüsseler,

Gehrke,

Kurth

et al. 2024

Advances in Optical Thin Films VIII

View full text Add to dashboard Cite

We report on an integrable thin-film Fabry-Pérot type electro-optic modulator (EOM) centered around an electro-optically active so-called guest-host polymer. This polymer material contains novel synthesized chromophore molecules (C3), which are aligned by electro-poling inside an amorphous polycarbonate host-matrix. When integrated into our Fabry-Pérot cavity, the electro-optic activity of the poled material can be observed in the short wavelength near infrared spectral range (approximately 900 nm -1070 nm). We derived a value of ~220 pm/V for its linear electro-optic coefficient at 988 nm from spectral transmission measurements with increasing direct voltages applied to the EOM. The resulting half-wave voltagelength product of the EOM setup is 0.25 Vcm. As an exemplary functional test, we demonstrated an intensity modulation of a 974 nm diode laser by applying ± 11.5 V alternating voltage to the EOM. Due to the all thin-film realization of the EOM setup, it is compatible to the substrate free, miniaturized interference filter fabrication method. With this method, thin-film elements with edge lengths between 25 µm and 2 mm can be fabricated. In combination with the demonstrated low drive voltage, these compact EOM filters are excellent candidates for hybrid integration into photonic platforms, as shown in this contribution.

show abstract