Design and performance of a reconfigurable liquid-crystal-based optical add/drop multiplexer

Ertel, J.; Helbing, R.; Hoke, Charles D.; Landolt, Oliver; Nishimura, K.A.; Robrish, P. R.; Trutna, R.

doi:10.1109/jlt.2006.871025

Cited by 14 publications

(10 citation statements)

References 6 publications

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“…Various technical approaches have been explored including free-space MEMS system [3] and free-space liquid crystal on silicon (LCOS) system [4] have been reported. However, a free-space-based wavelength routing would require many bulky optical components especially for collimation and polarization compensation.…”

Section: Introductionmentioning

confidence: 99%

A novel silica waveguide lens for free-space optical cross connects

Idris

Sorimoto

Tsuda

2012

IEICE Electron. Express

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A novel silica waveguide lens is proposed for use in freespace optical cross connects. It comprises a core-cladding stripe structure that acts as a phase modulator in the lens region. Beam propagation method (BPM) simulation results show that the phase is greatly similar to the approximated profile calculated by ray tracing. However, higher modes due to the rough lens profile leads to energy loss of below 0.8 dB. Further losses are expected from scattering due to the elimination of vertical beam confinement. The collimator also shows low wavelength and polarization dependence.

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Section: Introductionmentioning

confidence: 99%

A novel silica waveguide lens for free-space optical cross connects

Idris

Sorimoto

Tsuda

2012

IEICE Electron. Express

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“…Various technical approaches based on microelectromechanical systems (MEMS) [2]- [4], liquid crystal (LC) technologies [5], [6], and planar lightwave circuit (PLC) technologies [7] Manuscript have been reported. However, it is difficult for these devices to control spectral parameters like center wavelength and bandwidth because they have generally been limited by having inflexible configurations with one pixel or one switch element per WDM channel.…”

Section: Introductionmentioning

confidence: 99%

LCOS-Based Wavelength Blocker Array With Channel-by-Channel Variable Center Wavelength and Bandwidth

Sakurai

Kawasugi

Hotta

et al. 2011

IEEE Photon. Technol. Lett.

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We developed a new class of compact wavelength blocker (WB) array based on liquid crystal on silicon (LCOS), which enables per-channel control of not only the optical transmission power level but also channel center wavelength and channel bandwidth independently. We demonstrate an integrated device with WB array having 12 input/output ports for 50-GHz-spaced International Telecommunication Union-Telecommunication Standardization Sector (ITU-T) channels over the entire -band. The center wavelength and bandwidth can be adjusted independently with a minimum setting resolution of 3 and 6 GHz, respectively.

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“…[1][2][3][4][5][6]. ROADM subsystems can be built using MicroElectro-Mechanical Systems (MEMS) [6], liquid crystal [7], or Planar Lightwave Circuit (PLC) [8-9] based technologies. Among them, PLC-based ROADMs have become popular because of their simpler manufacturing approach [1].…”

Section: Introductionmentioning

confidence: 99%

OPN04-5: Hybrid Low Loss Architecture for Reconfigurable Optical Add/Drop Multiplexer

et al. 2006

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Reconfigurable Optical Add/Drop Multiplexers (ROADMs) manufactured with different designs and technologies are soon going to be available in the market. Unfortunately, the latest available ROADM architectures are either suffering from high insertion losses or high manufacturing costs that prevent their rapid deployment in the network. In this paper, we propose a low-loss hybrid architecture for a ROADM subsystem that combines the best features of the latest available ROADM designs. A metro network testbed has been designed and simulated in order to compare the performance of different ROADM modules. The obtained results indicate that our proposed Hybrid-ROADM module performs better than the latest available ROADM subsystems and would reduce the overall network operating costs.

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Design and performance of a reconfigurable liquid-crystal-based optical add/drop multiplexer

Cited by 14 publications

References 6 publications

A novel silica waveguide lens for free-space optical cross connects

A novel silica waveguide lens for free-space optical cross connects

LCOS-Based Wavelength Blocker Array With Channel-by-Channel Variable Center Wavelength and Bandwidth

OPN04-5: Hybrid Low Loss Architecture for Reconfigurable Optical Add/Drop Multiplexer

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