A Compact 310-Gb/s Optical Transceiver for High-Density Optical Interconnects

Matsuoka, Y.; Kohmu, Naohiro; Lee, Yong; Arimoto, Hideo; Takai, Toshiaki; Chujo, Norio; Satô, Masataka; Komatsuzaki, Shinji; Ogura, Atsushi; Yamazaki, Keiji; Sunaga, Yoshinori

doi:10.1109/lpt.2017.2648823

Cited by 12 publications

(5 citation statements)

References 8 publications

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“…The pitch of the electrical respectively connector pads is 0.5 mm, width and space of the signal transmission lines are 90 and 120 µm, respectively. The pitch is smaller than of our previous form-factor AOC [7]. Reduction of the pitch leads to an increase of crosstalk between adjacent channels.…”

Section: Crosstalk Characteristicsmentioning

confidence: 65%

“…Transmitter (Tx) optical power was assumed as that of a VCSEL with minimum optical modulation amplitude (OMA) set to 0 dBm under high-temperature operation at VCSEL temperature of 80 • C. In consideration of optical coupling loss caused by beam spreading from the 25-Gbit/s VCSEL, Tx optical-coupling efficiency between the VCSEL and the MMF was set to −2.0 dB [7]. Receiver (Rx) optical efficiency between the MMF and the 25-Gbit/s PD was set to −1.0 dB [7]. Optical transmission loss of the MMF up to 100 m (including effects of modal and chromatic dispersions on bit-error-rate (BER) power penalty) was set to 1.5 dB.…”

Section: Loss Budget Of 2578-gbit/s Multimode Optical Linkmentioning

confidence: 99%

“…Optical transmission loss of the MMF up to 100 m (including effects of modal and chromatic dispersions on bit-error-rate (BER) power penalty) was set to 1.5 dB. Moreover, considering the performance of the 25-Gbit/s TIA, optical sensitivity of the Rx side was set to −6.0 dBm [7]. The link margin was estimated to be 1.0 dB as shown in Figure 2.…”

Section: Loss Budget Of 2578-gbit/s Multimode Optical Linkmentioning

confidence: 99%

“…More recently, for high-density signal transmission, it has become necessary to increase the total input/output (I/O) capacity. To meet that need, we previously proposed a 25.78-Gbit/s × 12-ch AOC in the same size as the form factor of QSFP28 [7]. However, to meet system requirements, 4-ch and 1-ch AOCs are also required.…”

Section: Introductionmentioning

confidence: 99%

“…To achieve high density signal transmission with 4-ch AOCs, it is necessary to reduce the form-factor of AOCs compared with our previous form-factor (12-ch AOC) or the standard form factor of QSFP28 [7,8]. Miniaturizing the form-factor of an AOC, and therefore reducing its surface area, reduces its heat dissipation efficiency.…”

Section: Introductionmentioning

confidence: 99%

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A 25.78-Gbit/s × 4-ch Active Optical Cable with Ultra-Compact Form Factor for High-Density Optical Interconnects

et al. 2018

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A 25.78-Gbit/s × 4-ch active optical cable (AOC) with an ultra-compact form factor is proposed. The size of the proposed AOC is 5.2 cm 3 , which is 55% smaller than the standard form factor of Quad Small Form-factor Pluggable (QSFP28), and 45% smaller than that of Micro Quad Small Form-factor Pluggable (µQSFP). As a result of utilizing a high-efficiency heat-dissipation structure and optimizing signal transmission lines and ground vias, the proposed AOC achieves high-heat dissipation and low-crosstalk characteristics. Furthermore, the proposed AOC demonstrated 25.78-Gbit/s error-free optical transmission over a 100-m Optical Multimode 3 (OM3) multimode fiber under all-channels (4-ch) operation and case temperature (T c ) of 70 • C.

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Section: Crosstalk Characteristicsmentioning

confidence: 65%

Section: Loss Budget Of 2578-gbit/s Multimode Optical Linkmentioning

confidence: 99%

Section: Loss Budget Of 2578-gbit/s Multimode Optical Linkmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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