Abstract
We present a 10-GHz granularity reconfigurable WDM superchannel filter in a photonic integrated circuit. The filter uses a ring-resonator-assisted tapped-delay-line topology. An example configuration with two ring resonators and four tapped delay lines provides a spectral filter with a flat-top passband, a roll-off factor of 8%, a tunable central wavelength, and a selectable free spectral range, i.e. 2° or 4° the 3-dB passband bandwidth. The device was fabricated in a silicon nitride (Si3N4/SiO2) waveguide with a chip area of 0.36 cm2 and has a fiber-to-fiber insertion loss of 5 dB. We experimentally demonstrate the filter for selecting a subchannel from a WDM superchannel comprising 10-GHz subchannels with 10% and zero guard bands. Owing to the infinite impulse responses of ring resonators, this filter requires a significantly smaller area and fewer tuning elements compared with designs based on only tapped-delay-line finite-impulse-response filters. This work contributes to the creation of chip-scale all-optical WDM superchannel transceivers and reconfigurable optical add/drop multiplexers (ROADMs).
| Original language | English |
|---|---|
| Pages (from-to) | 2619-2626 |
| Number of pages | 8 |
| Journal | Journal of Lightwave Technology |
| Volume | 36 |
| Issue number | 13 |
| DOIs | |
| Publication status | Published - 13 Jul 2018 |
Keywords
- fast Fourier transform
- fiber communications
- Nyquist filter
- optical signal processing
- photonic integrated circuit
- transceiver
- waveguide device
- WDM
Cite this
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Selectable-FSR 10-GHz Granularity WDM Superchannel Filter in a Reconfigurable Photonic Integrated Circuit. / Xie, Yiwei; Geng, Zihan; Kong, Deming; Zhuang, Leimeng; Lowery, Arthur J.
In: Journal of Lightwave Technology, Vol. 36, No. 13, 13.07.2018, p. 2619-2626.Research output: Contribution to journal › Article › Research › peer-review
TY - JOUR
T1 - Selectable-FSR 10-GHz Granularity WDM Superchannel Filter in a Reconfigurable Photonic Integrated Circuit
AU - Xie, Yiwei
AU - Geng, Zihan
AU - Kong, Deming
AU - Zhuang, Leimeng
AU - Lowery, Arthur J.
PY - 2018/7/13
Y1 - 2018/7/13
N2 - We present a 10-GHz granularity reconfigurable WDM superchannel filter in a photonic integrated circuit. The filter uses a ring-resonator-assisted tapped-delay-line topology. An example configuration with two ring resonators and four tapped delay lines provides a spectral filter with a flat-top passband, a roll-off factor of 8%, a tunable central wavelength, and a selectable free spectral range, i.e. 2° or 4° the 3-dB passband bandwidth. The device was fabricated in a silicon nitride (Si3N4/SiO2) waveguide with a chip area of 0.36 cm2 and has a fiber-to-fiber insertion loss of 5 dB. We experimentally demonstrate the filter for selecting a subchannel from a WDM superchannel comprising 10-GHz subchannels with 10% and zero guard bands. Owing to the infinite impulse responses of ring resonators, this filter requires a significantly smaller area and fewer tuning elements compared with designs based on only tapped-delay-line finite-impulse-response filters. This work contributes to the creation of chip-scale all-optical WDM superchannel transceivers and reconfigurable optical add/drop multiplexers (ROADMs).
AB - We present a 10-GHz granularity reconfigurable WDM superchannel filter in a photonic integrated circuit. The filter uses a ring-resonator-assisted tapped-delay-line topology. An example configuration with two ring resonators and four tapped delay lines provides a spectral filter with a flat-top passband, a roll-off factor of 8%, a tunable central wavelength, and a selectable free spectral range, i.e. 2° or 4° the 3-dB passband bandwidth. The device was fabricated in a silicon nitride (Si3N4/SiO2) waveguide with a chip area of 0.36 cm2 and has a fiber-to-fiber insertion loss of 5 dB. We experimentally demonstrate the filter for selecting a subchannel from a WDM superchannel comprising 10-GHz subchannels with 10% and zero guard bands. Owing to the infinite impulse responses of ring resonators, this filter requires a significantly smaller area and fewer tuning elements compared with designs based on only tapped-delay-line finite-impulse-response filters. This work contributes to the creation of chip-scale all-optical WDM superchannel transceivers and reconfigurable optical add/drop multiplexers (ROADMs).
KW - fast Fourier transform
KW - fiber communications
KW - Nyquist filter
KW - optical signal processing
KW - photonic integrated circuit
KW - transceiver
KW - waveguide device
KW - WDM
UR - http://www.scopus.com/inward/record.url?scp=85044383219&partnerID=8YFLogxK
U2 - 10.1109/JLT.2018.2819687
DO - 10.1109/JLT.2018.2819687
M3 - Article
VL - 36
SP - 2619
EP - 2626
JO - Journal of Lightwave Technology
JF - Journal of Lightwave Technology
SN - 0733-8724
IS - 13
ER -