Lei Liu, Limin Chang, Yingxin Kuang, Zezheng Li, Yang Liu, Huan Guan, Manqing Tan, Yude Yu, Zhiyong Li. Low-cost hybrid integrated 4 × 25 GBaud PAM-4 CWDM ROSA with a PLC-based arrayed waveguide grating de-multiplexer[J]. Photonics Research, 2019, 7(7): 722
- Photonics Research
- Vol. 7, Issue 7, 722 (2019)
Fig. 1. (a) Side view and top view of the fabricated ROSA module; (b) side view of the coupling region.
Fig. 2. Coupling efficiency (η d d x
Fig. 3. Transmission spectrum of the polished PLC AWG De-MUX coupled with an SMF.
Fig. 4. Photographs of the fabricated ROSA module with (a) the outline and (b) the internal layout.
Fig. 5. Small-signal frequency response of S21 of the ROSA module.
Fig. 6. Experimental setup of the PAM-4 eye pattern and error analysis.
Fig. 7. PAM-4 eye patterns of the ROSA module at a Baud rate of (a) 20 GBaud, (b) 25 GBaud, (c) 28 GBaud, and (d) 30 GBaud.
Fig. 8. Symbol error ratio of PAM-4 transmission with different Baud rates for all lanes.
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