40 Gb/s optical subassembly module for a multi-channel bidirectional optical link

Jamshid Sangirov, Gwan-Chong Joo, Jae-Shik Choi, Do-Hoon Kim, Byeong-Su Yoo, Ikechi Augustine Ukaegbu, Nga T. H. Nguyen, Jong-Hun Kim, Tae-Woo Lee, Mu-Hee Cho, Hyo-Hoon Park

Research output: Contribution to journalArticle

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Abstract

A 40 Gb/s bidirectional optical link using four-channel optical subassembly (OSA) modules and two different wavelengths for the up- and down-link is demonstrated. Widely separated wavelengths of 850 nm and 1060 nm are used to reduce the optical crosstalk between the up- and down-link signals. Due to the integration capabilities of silicon, the OSA is implemented, all based on silicon: V-grooved silicon substrates to embed fibers and silicon optical benches (SiOBs) to mount optical components. The SiOBs are separately prepared for array chips of photodiodes (PDs), vertical-cavity surface-emitting lasers (VCSELs), and monitoring PDs, which are serially configured on an optical fiber array for direct coupling to the transmission fibers. The separation of the up- and down-link wavelengths is implemented using a wavelength-filtering 45° mirror which is formed in the fiber under the VCSEL. To guide the light signal to the PD another 45° mirror is formed at the end of the fiber. The fabricated bidirectional OSA module shows good performances with a clear eye-diagram and a BER of less than 10−12 at a data rate of 10 Gb/s for each of the channels with input powers of −8 dBm and −6.5 dBm for the up-link and the down-link, respectively. The measured inter-channel crosstalk of the bidirectional 40 Gb/s optical link is about −22.6 dB, while the full-duplex operation mode demonstrates negligible crosstalk between the up- and down-link.
Original languageEnglish
Pages (from-to)1768-1783
JournalOptics Express
Volume22
Issue number2
Publication statusPublished - Jan 27 2014

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subassemblies
modules
crosstalk
photodiodes
silicon
fibers
surface emitting lasers
wavelengths
seats
duplex operation
mirrors
cavities

Cite this

Sangirov, J., Joo, G-C., Choi, J-S., Kim, D-H., Yoo, B-S., Ukaegbu, I. A., ... Park, H-H. (2014). 40 Gb/s optical subassembly module for a multi-channel bidirectional optical link. Optics Express, 22(2), 1768-1783.

40 Gb/s optical subassembly module for a multi-channel bidirectional optical link. / Sangirov, Jamshid; Joo, Gwan-Chong; Choi, Jae-Shik; Kim, Do-Hoon; Yoo, Byeong-Su; Ukaegbu, Ikechi Augustine; Nguyen, Nga T. H.; Kim, Jong-Hun; Lee, Tae-Woo; Cho, Mu-Hee; Park, Hyo-Hoon.

In: Optics Express, Vol. 22, No. 2, 27.01.2014, p. 1768-1783.

Research output: Contribution to journalArticle

Sangirov, J, Joo, G-C, Choi, J-S, Kim, D-H, Yoo, B-S, Ukaegbu, IA, Nguyen, NTH, Kim, J-H, Lee, T-W, Cho, M-H & Park, H-H 2014, '40 Gb/s optical subassembly module for a multi-channel bidirectional optical link', Optics Express, vol. 22, no. 2, pp. 1768-1783.
Sangirov J, Joo G-C, Choi J-S, Kim D-H, Yoo B-S, Ukaegbu IA et al. 40 Gb/s optical subassembly module for a multi-channel bidirectional optical link. Optics Express. 2014 Jan 27;22(2):1768-1783.
Sangirov, Jamshid ; Joo, Gwan-Chong ; Choi, Jae-Shik ; Kim, Do-Hoon ; Yoo, Byeong-Su ; Ukaegbu, Ikechi Augustine ; Nguyen, Nga T. H. ; Kim, Jong-Hun ; Lee, Tae-Woo ; Cho, Mu-Hee ; Park, Hyo-Hoon. / 40 Gb/s optical subassembly module for a multi-channel bidirectional optical link. In: Optics Express. 2014 ; Vol. 22, No. 2. pp. 1768-1783.
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