Ultra-compact silicon-arrayed waveguide grating routers for optical interconnect systems

Guangyi Song; Jun Zou; Jianjun He

doi:10.3788/COL201715.030603

Journals >Chinese Optics Letters >Volume 15 >Issue 3 >Page 030603 > Article

Chinese Optics Letters
Vol. 15, Issue 3, 030603 (2017)

Ultra-compact silicon-arrayed waveguide grating routers for optical interconnect systems

Guangyi Song¹, Jun Zou², and Jianjun He^1、*

Author Affiliations

¹State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou 310027, China

²College of Science, Zhejiang University of Technology, Hangzhou 310028, China

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DOI: 10.3788/COL201715.030603 Cite this Article Set citation alerts

Guangyi Song, Jun Zou, Jianjun He. Ultra-compact silicon-arrayed waveguide grating routers for optical interconnect systems[J]. Chinese Optics Letters, 2017, 15(3): 030603 Copy Citation Text

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Fig. 1. Simulated spectral responses of (a) first input channel, (b) second input channel, (c) third input channel, and (d) fourth input channel.

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Fig. 2. (a) Scanning electron microscope images of the fabricated AWGR and (b) tapers between the FPR and arrayed waveguides.

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Fig. 3. Measured spectral responses of (a) first input channel, (b) second input channel, (c) third input channel, and (d) fourth input channel.

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Fig. 4. Measured transmission spectrum of the center input channel of the AWGR with the 6.4 nm channel spacing.

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Fig. 5. Measured transmission spectrum of the edge input channel of the AWGR with the 6.4 nm channel spacing.

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Fig. 6. Insertion loss of every channel of the AWGR with the 6.4 nm channel spacing.

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Fig. 7. Measured transmission spectrum of the center input channel of the AWGR with the 3.2 channel spacing.

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Parameter	Design A	Design B	Design C
Number of channels ( $N_{ch}$ )	4	8	16
Central wavelength ( $λ_{c}$ )	1550 nm	1550 nm	1550 nm
Channel spacing ( $Δ λ$ )	20 nm	6.4 nm	3.2 nm
FSR	80 nm	51.2 nm	51.2 nm
Diffraction order ( $m$ )	9	15	15
Length increment ( $Δ L$ )	7.96 μm	12.9 μm	12.9 μm
Pitch of adjacent array waveguides ( $d_{a}$ )	1.8 μm	1.8 μm	1.8 μm
Pitch of adjacent input/output waveguides ( $d_{r}$ )	2.5 μm	2 μm	2 μm
Length of FPR ( $R$ )	25 μm	37.1 μm	74.2 μm
Number of arrayed waveguides ( $N_{wg}$ )	17	25	40
Footprint	$0.27 mm \times 0.19 mm$	$0.37 mm \times 0.37 mm$	$0.58 mm \times 0.77 mm$

Table 1. Design Parameters

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Reference	Number of channel	Channel spacing (nm)	Loss (dB)	Crosstalk (dB)
[5]	8	0.8	2.92	−16.9–17.8
[6]	512	0.2	11.3	−4
[7]	8	3.2	2.4	−17.6–25.1
This work	4	20	2.5	−20
This work	8	6.4	3	−18
This work	16	3.2	4.9	−12

Table 2. Comparison of Reported AWGRs on SOI Platform with Devices in this Work

Guangyi Song, Jun Zou, Jianjun He. Ultra-compact silicon-arrayed waveguide grating routers for optical interconnect systems[J]. Chinese Optics Letters, 2017, 15(3): 030603

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