A fully reconfigurable photonic integrated signal processor

Liu, Weilin; Li, Ming; Guzzon, Robert S.; Norberg, Erik; Parker, John S.; Lu, Mingzhi; Coldren, L.A.; Yao, Jianping

doi:10.1038/nphoton.2015.281

Cited by 416 publications

(279 citation statements)

References 25 publications

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“…Our CMOS compatible fabrication process makes our differentiators comparable, in terms of fabrication maturity, to those implemented by means of optoelectronics silicon devices. [13][14][15][16][17] In particular, we note that, due to the ultra-low loss of our platform, the ring resonator has a quality factor of ∼1.2 × 10 6 . Our device architecture uses a vertical coupling scheme where the gap can be controlled via film growth-a more accurate approach than lithographic techniques.…”

Section: Resultsmentioning

confidence: 93%

“…(2) are intensity differentiators for baseband RF input signals, i.e., the combined output RF signal after detection yields an exact differentiation of the input RF signal, in contrast to field differentiators that yield the derivative of a complex optical field. 8,10,[12][13][14][15][16][17] We note that while optical field differentiators can be used to directly operate on microwave photonic signals, our approach has important advantages. When an RF signal is modulated onto an optical carrier, the intensity of the optical carrier is proportional to the square of the RF field.…”

Section: Operation Principlementioning

confidence: 99%

“…[8][9][10] To implement photonic differentiators, a number of schemes have been proposed, which can be classified into two categories, namely, field differentiators and intensity differentiators. 11 Field differentiators based on apodized fibre Bragg gratings 8,10,12 and integrated silicon photonic devices [13][14][15][16][17] have recently been demonstrated. These types of devices yield the derivative of a complex optical field and have the ability to shape ultra-short optical pulses that could find applications in optical pulse generation and advanced coding.…”

Section: Introductionmentioning

confidence: 99%

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Reconfigurable broadband microwave photonic intensity differentiator based on an integrated optical frequency comb source

et al. 2017

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We propose and experimentally demonstrate a microwave photonic intensity differentiator based on a Kerr optical comb generated by a compact integrated micro-ring resonator (MRR). The on-chip Kerr optical comb, containing a large number of comb lines, serves as a high-performance multi-wavelength source for implementing a transversal filter, which will greatly reduce the cost, size, and complexity of the system. Moreover, owing to the compactness of the integrated MRR, frequency spacings of up to 200-GHz can be achieved, enabling a potential operation bandwidth of over 100 GHz. By programming and shaping individual comb lines according to calculated tap weights, a reconfigurable intensity differentiator with variable differentiation orders can be realized. The operation principle is theoretically analyzed, and experimental demonstrations of the first-, second-, and third-order differentiation functions based on this principle are presented. The radio frequency amplitude and phase responses of multi-order intensity differentiations are characterized, and system demonstrations of real-time differentiations for a Gaussian input signal are also performed. The experimental results show good agreement with theory, confirming the effectiveness of our approach.

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Section: Resultsmentioning

confidence: 93%

Section: Operation Principlementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Reconfigurable broadband microwave photonic intensity differentiator based on an integrated optical frequency comb source

et al. 2017

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“…This work not only shows the current maturity of the photonic integration and packaging technology, but also demonstrates the potential capabilities of the generic foundry fabrication model that is expected to provide an effective path for the fast development of PIC-based applications. In the direction toward fully programmable integrated signal processors, Liu et al [96] have demonstrated a photonic integrated circuit fabricated in a similar waveguide platform that is able to be electrically reconfigured to implement multiple, different signal processing functions as shown in Figure 19. The circuit architecture studied in that work is anticipated to inspire more complex designs of such processors and a wide variety of signal processing functions.…”

Section: Device and System Development 71 Photonic Integrated Circuimentioning

confidence: 99%

Programmable optical processor chips: toward photonic RF filters with DSP-level flexibility and MHz-band selectivity

et al. 2017

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Integrated optical signal processors have been identified as a powerful engine for optical processing of microwave signals. They enable wideband and stable signal processing operations on miniaturized chips with ultimate control precision. As a promising application, such processors enables photonic implementations of reconfigurable radio frequency (RF) filters with wide design flexibility, large bandwidth, and high-frequency selectivity. This is a key technology for photonic-assisted RF front ends that opens a path to overcoming the bandwidth limitation of current digital electronics. Here, the recent progress of integrated optical signal processors for implementing such RF filters is reviewed. We highlight the use of a low-loss, high-index-contrast stoichiometric silicon nitride waveguide which promises to serve as a practical material platform for realizing high-performance optical signal processors and points toward photonic RF filters with digital signal processing (DSP)-level flexibility, hundreds-GHz bandwidth, MHz-band frequency selectivity, and full system integration on a chip scale.

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“…Several other platforms such as InP and group III-V materials have demonstrated the capability to support light generation, amplification, modulation, and detection, which are inherent properties that can be exploited to fill in the missing gap in silicon based integrated photonic circuits [83]. For example, reconfigurable photonic integrated signal processors based on the InP-InGaAsP material system have been reported in [8,84]. In [8], an example of a MWP filter with a reconfigurable RF response is demonstrated.…”

Section: Integrated Mwp For Inline Photonic Signal Processing and Fulmentioning

confidence: 99%

Integrated Microwave Photonics for Wideband Signal Processing

Chew

Song

et al. 2017

Photonics

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Abstract:We describe recent progress in integrated microwave photonics in wideband signal processing applications with a focus on the key signal processing building blocks, the realization of monolithic integration, and cascaded photonic signal processing for analog radio frequency (RF) photonic links. New developments in integration-based microwave photonic techniques, that have high potentialities to be used in a variety of sensing applications for enhanced resolution and speed are also presented.

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A fully reconfigurable photonic integrated signal processor

Cited by 416 publications

References 25 publications

Reconfigurable broadband microwave photonic intensity differentiator based on an integrated optical frequency comb source

Reconfigurable broadband microwave photonic intensity differentiator based on an integrated optical frequency comb source

Programmable optical processor chips: toward photonic RF filters with DSP-level flexibility and MHz-band selectivity

Integrated Microwave Photonics for Wideband Signal Processing

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