نتایج جستجو برای: channel drop filter

تعداد نتایج: 383363  

2003
Dorothea Wiesmann Roland Germann Gian-Luca Bona Christian David Heinz Jäckel

We report on the fabrication of a grating-based add–drop filter in SiON planar waveguide technology. We achieved apodization of the Bragg grating by concatenating subgratings with various duty cycles. We present the theoretical and experimental dependence of the coupling coefficient on the duty cycle, which leads to a minimum coupling coefficient of 30%. With a breeder genetic algorithm we were...

The influence of variation in rib-height to channel-height ratio (e/H) on the heat transfer and pressure drop characteristics inside a channel with corrugated upper and lower plates was investigated numerically in the present study. The governing equations were solved by using finite volume approximations for a wide range of (0.06 < e/H < 0.26) and Reynolds numbers (5400 < Re < 23000), with a m...

Journal: :Nano letters 2007
Valentyn S Volkov Sergey I Bozhevolnyi Eloïse Devaux Jean-Yves Laluet Thomas W Ebbesen

We fabricate and investigate wavelength selective components utilizing channel plasmon polaritons (CPPs) and operate at telecom wavelengths: a waveguide-ring resonator-based add-drop multiplexer (WRR-ADM) and a compact (3.75-microm-long) Bragg grating filter (BGF). The CPP waveguides represent 0.5-microm-wide and 1.3-microm-deep V-grooves in gold, which are combined with a 5-microm-radius ring ...

2017
Azar Maalouf Michel Gadonna Dominique Bosc Isabelle Hardy

In this paper we present optical and thermo-optical characterization results of integrated filters based on micro-ring resonators fabricated with a couple of polymers ‘‘PVCI/PMATRIFE’’. Their high index contrast (Dn 0.15 at the wavelength of 1550 nm) allows to make small size waveguides with cross sections of 1.5 1.5 mm2. The study of the impact of different gaps on the extinction ratio and FWH...

2015
Leimeng Zhuang Chen Zhu Bill Corcoran Maurizio Burla Chris G. H. Roeloffzen Arne Leinse Jochen Schröder Arthur J. Lowery

Nyquist wavelength division (de)multiplexing (N-WDM) is a highly promising technique for next-generation high-speed elastic networks. In N-WDM, Nyquist filtering is an essential function that governs the channel spectral efficiency. However, most Nyquist filter implementations to date require either expensive, power-hungry digital electronics or complex arrangements of bulky optical components,...

Journal: :JORS 2010
W. K. Chiang Y. Feng

Drop-shipping is an arrangement whereby an e-tailer, who does not hold inventories, processes orders and requests a manufacturer to ship products directly to the end customers. To explore the economic benefits of adopting drop-shipping distribution strategy in a competitive environment, we investigate the profitability and the efficiency of the drop-shipping channel as compared to the tradition...

ژورنال: سلامت کار ایران 2013
باکند, شهناز, رضایی فرد, بهزاد, صدیق زاده, اصغر, صلحی, مهناز, فرشاد, علی اصغر , مرادی, غلامرضا, موسوی, سعید, یاراحمدی, رسول ,

  Background and aims : With the increasing application of nanotechnology concerns about the negative effects of human exposure and environmental releases of these particles is also doubled. Among the most well-known media, ULPA filters are used to control nanoparticles. In this study, the efficiency and pressure drop of ULPA fiber bed for collection and removal of nanoparticles were investigat...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید