Silicon nitride polarization beam splitter based on polarization-independent MMIs and apodized Bragg gratings.
Opt Express
; 29(10): 14476-14485, 2021 May 10.
Article
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| MEDLINE
| ID: mdl-33985170
We present the design and experimental results of a novel polarization beam splitter (PBS) with a high polarization extinction ratio (PER) made on a Si3N4 platform. The PBS is composed of two identical polarization-independent multi-mode interferometers and two identical apodized Bragg gratings. The operating principle of this device is based on the fact that the TE and TM stopbands of the grating are centered at different wavelengths. The reflected and transmitted light from the gratings are routed to separate output ports by the two-MMI configuration. The experimental results show that a PER of > 30 dB is achieved over a bandwidth of 22 nm, with an insertion loss of â¼ 1.1 dB. The total length of the device is â¼ 820 µm.
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MEDLINE
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En
Revista:
Opt Express
Asunto de la revista:
OFTALMOLOGIA
Año:
2021
Tipo del documento:
Article
Pais de publicación:
Estados Unidos