A 2.5-mW SOS CMOS Optical Receiver for Chip-to-Chip Interconnect

Apsel, Alyssa; Fu, Zhongtao; Andreou, Andreas G.

doi:10.1109/jlt.2004.833263

Cited by 12 publications

(2 citation statements)

References 18 publications

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“…The transparency of the sapphire substrate enables simple flip-chip integration of optoelectronic devices such as photodetectors and vertical cavity surface emitting lasers (VCSEL). Optical signals can couple and transmit through the die with little loss [4,5]. The primary benefits of the SOS technology for our receiver design are the reduced parasitic capacitance of the input devices and the inductors.…”

Section: Receiver Architecturementioning

confidence: 99%

A 10 Gb/s optical receiver in 0.25 μm silicon-on-sapphire CMOS

Chen

Pappu

et al. 2008

2008 IEEE International Symposium on Circuits and Systems (ISCAS)

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An optical receiver designed and fabricated in 0.25µm ultra-thin silicon (UTSi) on sapphire technology is flip-chip integrated with p-i-n photodiodes. The receiver includes a transimpedance amplifier (TIA), limiting amplifiers (LA), and an output buffer. The power consumption of the TIA and limiting amplifiers is 67.3 mW. The receiver is shown operating with a gain of 57 dB at a bit rate of 10 Gb/s. The measured sensitivity is 1.7 dBm for a bit error rate of 10 -9 . This is the first 0.25µm CMOS TIA and LA codesign that operates optically at 10 Gb/s.

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Section: Receiver Architecturementioning

confidence: 99%

A 10 Gb/s optical receiver in 0.25 μm silicon-on-sapphire CMOS

Chen

Pappu

et al. 2008

2008 IEEE International Symposium on Circuits and Systems (ISCAS)

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“…The weakness of this design is in the conversion from differential to single ended signaling as power is wasted in the dummy load. Figure 2 shows an electrical model for a conventional receiver [1]. In this case, the conversion from a single ended optical signal to a differential electronic signal happens at the output of the transimpedance amplifer (TIA) where a fixed voltage is applied to the second input of the differential amplifier.…”

Section: Introductionmentioning

confidence: 99%

Efficient optical communications using multibit differential signaling

et al. 2006

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We present an alternative signaling method for multi-channel fiber ribbon based optical links. The method is based on a hybrid of differential signaling and single-ended channels. Channels are grouped into code blocks of n-bits. Each code word transmitted in the block is restricted to conform to an n choose m rule. Electrical drivers steer current between m active VCSELS with no dummy loads. A virtual reference is synthesized from the received signals and used for differential discrimination. This signaling method approaches the signal-to-noise characteristics of fully differential signaling but can be implemented with significantly lower channel overhead, giving as much as a 33% reduction in fiber count and a 44% reduction in power. Further, code utilization rates on these links can be as low as 51%, leaving substantial code space available for ECC or channel management functions. In this paper, we describe the signaling method and present a prototype transceiver chip. The transceiver is implemented in 0.25um UTSi Silicon-on-Sapphire technology with flip-chip bonded VCSEL and photodetector arrays. The design demonstrates a pin-compatible alternative to the POP4-MSA transceiver standard with 125% greater data throughput and 25% better power efficiency.

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MEMS optical switches and interconnects

Tsai

2015

Displays

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A 2.5-mW SOS CMOS Optical Receiver for Chip-to-Chip Interconnect

Cited by 12 publications

References 18 publications

A 10 Gb/s optical receiver in 0.25 μm silicon-on-sapphire CMOS

A 10 Gb/s optical receiver in 0.25 μm silicon-on-sapphire CMOS

Efficient optical communications using multibit differential signaling

MEMS optical switches and interconnects

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