Multimode interference wavelength multi/demultiplexer for 1310 and 1550nm operation based on BCB 4024-40 photodefinable polymer

Ibrahim, Mohd Haniff; Lee, Shuh Ying; Chin, Mee-Koy; Kassim, Norazan Mohd.; Mohammad, Abu Bakar

doi:10.1016/j.optcom.2007.01.006

Cited by 17 publications

(8 citation statements)

References 17 publications

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“…我们前期的研究表明, 视锥细胞外段的模场直径与其几何直径相当, 并且非常接近模场直径曲线的最小值, 使得外段的光互扰比较小, 有利于提高空间分辨率 [11] . 然而, 肌样体和外纤维的模场直径约为2.05~2.46 m [11] , 与相邻视锥细胞的芯间距通信系统中广泛使用的光纤耦合器 [18,19] . [20] .…”

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The explanation of color vision based on fiber coupler theory of foveal cones

Liang

Meng

2016

Chin. Sci. Bull.

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The explanation of color vision based on fiber coupler theory of foveal cones

Liang

Meng

2016

Chin. Sci. Bull.

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“…Also the beat length ratio is calculated for each case [2]. In the second step of our simulation we analysed the effect of structure width variation over the beat length ratio.…”

Section: Determination Of the MMI Lengthmentioning

confidence: 99%

Optimization of MMI-WDM demultiplexer by using BPM method

Triki

Najjar

Rezig

2007

2007 ICTON Mediterranean Winter Conference

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An optical demultiplexer based on the multimode interference (MMI) coupler is demonstrated in this work. The proposed device is designed and simulated by showing the optimum parameters for the structure (length of MMI region, the separation and the angle of the arm). The calculated results show that the crosstalk of the coupler is about -19.4 and -11.66 dB for 1310 and 1550 nm respectively. The insertion Loss is around 1.5-2.5 dB for demultiplexing operation. Keywords: optical coupler, optical telecommunication, optical crosstalk, beam propagation method (BPM), multimode interference (MMI), wavelength division multiplexing (WDM). INTRODUCTIONIntensive research has recently been conducted on semiconductor optical devices for wavelength division multiplexers as reported in literatures. Wavelength division multiplexing (WDM) devices for subscriber networks have become an important issue. Moreover, the integration of optical element devices with wavelength selective functions has also attracted a lot of attention. Several wavelength division devices have been demonstrated using Bragg gratings, liquid crystal filters, fiber ring filters, MEMS systems and other methods. One promising technique is using silicon-on-insulator waveguide devices in WDM optical communication systems. CMOS electronics on SOI wafers have shown promise as the future technology for low-power and high-speed applications. Although Bragg gratings, liquid crystals and MEMS are candidates, the multimode interference (MMI) WDM device has a smaller size and is compatible with the CMOS fabrication process. Some good SOI waveguide structures have also been proved for reducing the optical insertion loss and optical crosstalk in 1300 and 1550 nm optical communication windows. For the above reasons, we choose the SOI structure for producing wavelength division devices [1].Recently, some good WDM applications using MMI waveguide structure were reported. Therefore, we apply the MMI technique to realize a 1×2 compact MMI SOI 1310/1550 nm wavelength division multiplexer that is smaller than the traditional fiber-optic 1310/1550 nm wavelength division multiplexer. Meanwhile, integration of hybrid photonic devices is becoming an important issue for applications in optical communication networks. We think that a compact MMI wavelength division multiplexer is very useful in hybrid photonic device integration [6].Couplers play an important role in optical communication systems and can be used to combine or split the power of different optical channels. Single-mode fiber couplers are also used to make optical fiber WDM components, such as 1310/1550 nm WDM fiber-optic directional couplers. The fiber-optical directional couplers have a large coupling length (about several centimetres) [3], [4].In this paper, we design and simulate the wavelength response of MMI wavelength division multiplexers. Our simulation is based on the method of BPM (beam propagation method). We search the critical parameters (length of MMI, the separation and the arm angle) which give the optimu...

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“…Several integrated−optical schemes have been proposed to perform the function, including conventional directional couplers [2], asymmetric Y−branching devices [3], asymmetric Mach− −Zehnder interferometers [4], MMI coupler [5][6][7], and multi− −core fibre [8]. Among them, MMI−based demultiplexers have attracted much attention because of compact size, low loss, larger fabrication tolerance and the broad bandwidth properties of MMI waveguides [9][10][11][12][13][14]. However, there is still possibility of further improving the quality of demulti− plexer in term of loss and power.…”

Section: Introductionmentioning

confidence: 99%

Design and performance analysis of InP/InGaAsP-MMI based 1310/1550-nm wavelength division demultiplexer with tapered waveguide geometry

Chack

Kumar

Raghuwanshi

2015

Opto-Electronics Review

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The design and performance analysis of a 1310/1550-nm wavelength division demultiplexer with tapered geometry based on InP/InGaAsP multimode interference (MMI) coupler has been carried out. Wavelength response of demultiplexer of conventional MMI and tapered input and tapered output (tapered I/O) waveguides geometry of the MMI have been discussed. The demultiplexing function has been first performed by choosing a suitable refractive index of the guiding region and geometrical parameters such as the width and length of MMI structure have been achieved. Access width of tapered I/O waveguides have been adjusted to give a low insertion loss (IL) and high extinction ratio (ER) for the considered wavelengths of 1310 nm and 1550 nm. The total size of the demultiplexer has been significantly reduced over the existing MMI devices. Numerical simulations with finite difference beam propagation method are applied to design and optimize the operation of the proposed demultiplexer.

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Multimode interference wavelength multi/demultiplexer for 1310 and 1550nm operation based on BCB 4024-40 photodefinable polymer

Cited by 17 publications

References 17 publications

The explanation of color vision based on fiber coupler theory of foveal cones

The explanation of color vision based on fiber coupler theory of foveal cones

Optimization of MMI-WDM demultiplexer by using BPM method

Design and performance analysis of InP/InGaAsP-MMI based 1310/1550-nm wavelength division demultiplexer with tapered waveguide geometry

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