Investigations of thermal crosstalk in laser arrays for WDM applications

Klepser, B.; Hillmer, Hartmut

doi:10.1109/50.721077

Cited by 20 publications

(3 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The thermal crosstalk in WLAs has been investigated. [58][59][60][61][62] The solutions include thermal isolation with deep trenches between lasers, the use of larger device separation, and the improvement of thermal conduction with better heat-sink materials. The crosstalk can be particularly challenging when thermal tuning is also used to correct the wavelength error of individual lasers and=or to tune the wavelength in WSL lasers.…”

Section: Thermal and Electric Crosstalksmentioning

confidence: 99%

Wavelength division multiplexing laser arrays for applications in optical networking and sensing: Overview and perspectives

Lee

Pukhrambam

2018

Jpn. J. Appl. Phys.

View full text Add to dashboard Cite

Wavelength division multiplexing (WDM) laser arrays (WLAs) can provide compact light sources for optical telecommunications, interconnections, switching, and optical sensing applications. The technologies to realize WLAs are reviewed and discussed with focus on wavelength registration and manufacturing complexity. WLAs can be realized in monolithic or hybrid integration approaches. The issues and challenges for applying monolithic or hybrid integration to realize WLAs will be discussed. The laser arrays based on hybrid laser structure and the silicon photonics foundry fabrication model will be highlighted.

show abstract

Section: Thermal and Electric Crosstalksmentioning

confidence: 99%

Wavelength division multiplexing laser arrays for applications in optical networking and sensing: Overview and perspectives

Lee

Pukhrambam

2018

Jpn. J. Appl. Phys.

View full text Add to dashboard Cite

show abstract

“…The tuning mechanism is that the increasing of I 2 produces extra heat which changes the temperature of Section I. Consequently, the refractive index of Section I is varied that causes the variation of the wavelength. According to [25] and [26], there must be thermal crosstalk between the lasers in DFB-MLAs. Fig.…”

Section: A Characteristics Of the Four-channel Ts-dfb-lasmentioning

confidence: 99%

Study on Two-Section DFB Lasers and Laser Arrays Based on the Reconstruction Equivalent Chirp Technique and Their Application in Radio-Over-Fiber Systems

Zhang

Zheng

Shi

et al. 2015

IEEE J. Select. Topics Quantum Electron.

View full text Add to dashboard Cite

Two-section distributed feedback (TS-DFB) semiconductor lasers based on the reconstruction equivalent chirp technique is proposed. A four-channel TS-DFB laser array (TS-DFB-LA) is theoretically studied and experimentally demonstrated.Compared with the conventional one-section DFB lasers, the proposed TS-DFB lasers have much higher output efficiency and higher side-mode suppression ratio (SMSR) when both the facets of the laser cavity are coated with antireflection coatings. About 39% increase in output efficiency, more than 10 mA decrease in threshold current, and about 5 dB increase in SMSR have been achieved experimentally. Furthermore, experimental results show that the wavelength spacing accuracy of the four-channel TS-DFB-LA can be improved by tuning the injection current of one of the two sections. Using the two-section structure, the dynamic characteristics including small-signal frequency response, relative intensity noise, and spurious-free dynamic range are also improved significantly. A radio-over-fiber link utilizing the TS-DFB laser as directly modulated light source was experimentally achieved. About 50 MSymbol/s 64-QAM signal with 10 GHz carrier was transmitted from the TS-DFB laser. After 40 km transmission in single-mode fiber, the average error vector magnitude of the whole link is 2.97%.Index Terms-Distributed feedback (DFB) lasers, laser arrays, reconstruction equivalent chirp (REC) technique, radio over fiber (ROF), side mode suppression ratio (SMSR), two-section DFB (TS-DFB) laser.

show abstract

“…The literature offers both theoretical and experimental [11]- [13] investigations of thermal crosstalk in an array of lasers and also thermal crosstalk interaction between active and passive components [14], but a few technological solutions have been proposed so far to reduce the thermal crosstalk.…”

mentioning

confidence: 99%

Deep Trenches for Thermal Crosstalk Reduction in InP-Based Photonic Integrated Circuits

Gilardi

Yao

Haghighi

et al. 2014

J. Lightwave Technol.

View full text Add to dashboard Cite

Abstract-We numerically and experimentally investigate an onchip solution to reduce the thermal crosstalk in indium phosphidebased photonic integrated circuits. We introduce deep trenches, fabricated through wet etch, between active and passive components. The current injected in active components and the geometry of the trenches are the parameters considered in our analysis. The trenches thermally isolate the passive components from the heat generated by active components. The thermal crosstalk is quantified by measuring the effects on the electro-optical response of an MZ modulator considered as a test structure. The heat sources are represented by semiconductor optical amplifiers placed at different distances with respect to the position of the MZ. Our experiments show how both the geometry and the position of the trenches, play a role in the reduction of the thermal crosstalk.

show abstract

Investigations of thermal crosstalk in laser arrays for WDM applications

Cited by 20 publications

References 11 publications

Wavelength division multiplexing laser arrays for applications in optical networking and sensing: Overview and perspectives

Wavelength division multiplexing laser arrays for applications in optical networking and sensing: Overview and perspectives

Study on Two-Section DFB Lasers and Laser Arrays Based on the Reconstruction Equivalent Chirp Technique and Their Application in Radio-Over-Fiber Systems

Deep Trenches for Thermal Crosstalk Reduction in InP-Based Photonic Integrated Circuits

Contact Info

Product

Resources

About