Wavelength Locking of Silicon Photonics Multiplexer for DML-Based WDM Transmitter

Grillanda, Stefano; Ji, Ruiqiang; Morichetti, Francesco; Carminati, Marco; Ferrari, Giorgio; Guglielmi, Emanuele; Peserico, Nicola; Annoni, Andrea; Dede, Alberto; Nicolato, Danilo; Vannucci, A.; Klitis, Charalambos; Holmes, B. M.; Sorel, Marc; Fu, Shuyu; Man, Jia; Zeng, Li; Sampietro, Marco; Melloni, Andrea

doi:10.1109/jlt.2016.2641163

Cited by 11 publications

(4 citation statements)

References 39 publications

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“…In 2015, Tsuboi et al also controlled the wavelength of distributed feedback (DFB) lasers with the power of beat noise by coupling the DFB laser and reference light directly [19] , demanding output power of the DFB laser be constant. In 2017, Grillanda et al realized a 10 Gbit/s × 4 transmitter with a channel spacing of 0.8 nm, which employed silicon micro-loop resonators to control the wavelength of multi-directly modulated lasers [20] .…”

Section: Introductionmentioning

confidence: 99%

Wavelength synchronization technology for UDWDM-PON transmitter based on injection locking

et al. 2021

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We propose a concept of wavelength synchronization to ensure the stability of ultra-dense channels in an ultra-dense wavelength division multiplexing passive optical network (UDWDM-PON) transmitter. A mode-locked laser is used to provide wavelength references for users. By injection locking the semiconductor laser, the separation of the wavelength reference is realized in an optical line terminal. The downlink and uplink wavelength references are interlaced and distributed to facilitate the synchronization of uplink carriers. In the optical network unit, the uplink optical carriers are filtered by injection locking semiconductor lasers, which achieve wavelength synchronization for the uplink users. In this Letter, an adaptive wavelength synchronization transmitter for UDWDM-PON is realized with a channel spacing of 5 GHz.

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Section: Introductionmentioning

confidence: 99%

Wavelength synchronization technology for UDWDM-PON transmitter based on injection locking

et al. 2021

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“…In order not to jeopardize the benefit of the lowcapacitance bonding wires, the length of the connection from the bonding to the TIA input, typically consisting in a copper track on a PCB, should be carefully minimized. To this purpose, the TIA (either an off-the-shelf component [11] or a dedicated ASIC [23]) can be soldered on a small PCB holder hosting at close distance both the photonic chip and the frontend components of the readout chain [10].…”

Section: Readout Electronicsmentioning

confidence: 99%

“…The CLIPP concept has been demonstrated on both silicon (Si) [4] and indium phosphide (InP) [8] photonic platforms. Thanks to its versatility, it has been utilized in several different applications, including automatic fiber-to-waveguide alignment at a single facet [9], wavelength tuning and stabilization of micro-ring resonators (MRRs) locked both at the resonance [10] and off-resonance, for instance for carving 410Gb/s WDM signals generated by directly-modulated lasers [11] as well as light-path tracking and feedback-control of switch fabrics [12].…”

Section: Introductionmentioning

confidence: 99%

Design Guidelines for Contactless Integrated Photonic Probes in Dense Photonic Circuits

Carminati

Annoni

Morichetti

et al. 2017

J. Lightwave Technol.

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This paper provides detailed guidelines for the optimal design of contactless integrated photonic probes suitable to track and control the local optical power in photonic circuits. With reference to current technology platforms, this paper provides a guide to extract the electrical parameters of the probe and to highlight their role in defining the achievable resolution. Crucial technological and geometrical choices are discussed, together with layout and interconnection solutions oriented to a highly dense integration of the probes. Finally, the criteria for the optimal coupling of the probes to the most suitable readout electronics providing the maximization of the SNR are presented. With these guidelines in mind, transparent in-line local power monitors featuring -35 dBm sensitivity, 40 dB of dynamic range, broadband response from 1.3 to 1.6 Î¼m, a speed down to tens of microsecond and a minimum size of tens of micrometer can be effectively designed for high performance reconfiguration and closed-loop control of complex photonic circuits

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“…The Mach-Zehnder scheme makes circuit insensible to power fluctuation while keeping the MRR locked. Another example shows the possibility to lock DML sources to silicon photonics MRR's, allowing the multiplexing of 4 10Gbps channels [7]. In all these applications, optical circuits are locked to external sources, using heaters or pn junction, however it is also possible to do the opposite, i.e.…”

Section: Introductionmentioning

confidence: 99%

System for tracking femtometer resonance shifts of silicon photonics microring resonator by locking tunable laser

Peserico

Barbi²,

Bruccoleri

et al. 2018

Integrated Optics: Devices, Materials, and Technologies XXII

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Very fast and accurate frequency tracking is essential for many photonic integrated circuit applications, such as sensing or in telecommunication systems. In particular, accurately locking a laser frequency to micro-ring wavelength resonance shifts is crucial for many applications like for example sensing in general and bio-sensing in particular. In this work, we present an innovative system capable of locking a tunable laser frequency to a silicon photonics microring resonator (MRR) and of tracking any changes in its wavelength over time with very high speed, accuracy and sensitivity. An electronic digital feedback loop is used to balance the power at the drop/through outputs of the micro-ring thus finely tuning the wavelength of the input laser. The silicon photonics chip is equipped with integrated photodiodes at each port of the MRR. Thanks to the low noise characteristics of integrated photodiodes and the high resolution of the laser tuning capability it was possible to lock shifts of less than 7 fm of residual noise at 1550 nm. The digital implementation of the feedback loop allowed to reach bandwidths of up to 1 kHz. Fully functional samples of the locking system including different micro-ring resonators, with Q-factor varying from 5000 to 60000 were manufactured showing excellent performance results.

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Wavelength Locking of Silicon Photonics Multiplexer for DML-Based WDM Transmitter

Cited by 11 publications

References 39 publications

Wavelength synchronization technology for UDWDM-PON transmitter based on injection locking

Wavelength synchronization technology for UDWDM-PON transmitter based on injection locking

Design Guidelines for Contactless Integrated Photonic Probes in Dense Photonic Circuits

System for tracking femtometer resonance shifts of silicon photonics microring resonator by locking tunable laser

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