Tunable add-drop filter using an active whispering gallery mode microcavity

Faraz Monifi, Şahin Kaya Özdemir, Lan Yang

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

An add-drop filter (ADF) fabricated using a whispering gallery mode resonator has different crosstalks for add and drop functions due to non-zero intrinsic losses of the resonator. Here, we show that introducing gain medium in the resonator and optically pumping it below the lasing threshold allows not only loss compensation to achieve similar and lower crosstalks but also tunability in bandwidth and add-drop efficiency. For an active ADF fabricated using an erbium-ytterbium co-doped microsphere, we achieved 24-fold enhancement in the intrinsic quality factor, 3.5-fold increase in drop efficiency, bandwidth tunability of 34 MHz, and a crosstalk of only 2%.

Original languageEnglish (US)
Article number181103
JournalApplied Physics Letters
Volume103
Issue number18
DOIs
StatePublished - Oct 28 2013

Fingerprint

whispering gallery modes
filters
crosstalk
resonators
bandwidth
ytterbium
erbium
lasing
Q factors
pumping
thresholds
augmentation

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

@article{9ec1e5eef88e4e15918cb57d76f98e73,
title = "Tunable add-drop filter using an active whispering gallery mode microcavity",
abstract = "An add-drop filter (ADF) fabricated using a whispering gallery mode resonator has different crosstalks for add and drop functions due to non-zero intrinsic losses of the resonator. Here, we show that introducing gain medium in the resonator and optically pumping it below the lasing threshold allows not only loss compensation to achieve similar and lower crosstalks but also tunability in bandwidth and add-drop efficiency. For an active ADF fabricated using an erbium-ytterbium co-doped microsphere, we achieved 24-fold enhancement in the intrinsic quality factor, 3.5-fold increase in drop efficiency, bandwidth tunability of 34 MHz, and a crosstalk of only 2{\%}.",
author = "Faraz Monifi and {Kaya {\"O}zdemir}, Şahin and Lan Yang",
year = "2013",
month = "10",
day = "28",
doi = "10.1063/1.4827637",
language = "English (US)",
volume = "103",
journal = "Applied Physics Letters",
issn = "0003-6951",
publisher = "American Institute of Physics Publising LLC",
number = "18",

}

Tunable add-drop filter using an active whispering gallery mode microcavity. / Monifi, Faraz; Kaya Özdemir, Şahin; Yang, Lan.

In: Applied Physics Letters, Vol. 103, No. 18, 181103, 28.10.2013.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Tunable add-drop filter using an active whispering gallery mode microcavity

AU - Monifi, Faraz

AU - Kaya Özdemir, Şahin

AU - Yang, Lan

PY - 2013/10/28

Y1 - 2013/10/28

N2 - An add-drop filter (ADF) fabricated using a whispering gallery mode resonator has different crosstalks for add and drop functions due to non-zero intrinsic losses of the resonator. Here, we show that introducing gain medium in the resonator and optically pumping it below the lasing threshold allows not only loss compensation to achieve similar and lower crosstalks but also tunability in bandwidth and add-drop efficiency. For an active ADF fabricated using an erbium-ytterbium co-doped microsphere, we achieved 24-fold enhancement in the intrinsic quality factor, 3.5-fold increase in drop efficiency, bandwidth tunability of 34 MHz, and a crosstalk of only 2%.

AB - An add-drop filter (ADF) fabricated using a whispering gallery mode resonator has different crosstalks for add and drop functions due to non-zero intrinsic losses of the resonator. Here, we show that introducing gain medium in the resonator and optically pumping it below the lasing threshold allows not only loss compensation to achieve similar and lower crosstalks but also tunability in bandwidth and add-drop efficiency. For an active ADF fabricated using an erbium-ytterbium co-doped microsphere, we achieved 24-fold enhancement in the intrinsic quality factor, 3.5-fold increase in drop efficiency, bandwidth tunability of 34 MHz, and a crosstalk of only 2%.

UR - http://www.scopus.com/inward/record.url?scp=84889668639&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84889668639&partnerID=8YFLogxK

U2 - 10.1063/1.4827637

DO - 10.1063/1.4827637

M3 - Article

AN - SCOPUS:84889668639

VL - 103

JO - Applied Physics Letters

JF - Applied Physics Letters

SN - 0003-6951

IS - 18

M1 - 181103

ER -