Fused coupler switch using a thermo-optic cladding

Diemeer, Mart; Vries, W.J. De; Benoist, Koen W.

doi:10.1049/el:19880309

Cited by 14 publications

(7 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Previous experimental results show that the refractive index variation with temperature is analyzed for large-core PMMA POF [13]. The following function is used to describe the variation of the refractive index by performing a nonlinear least-square fit: n ( T ) = n 0 + aT + bT for fluorinated polymer [19,20], which are the materials of the core and the cladding, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…The excess loss of the HF coupler is very low, 0.3 to 5 dB. The device is developed as an optical switch which optical power can be switched completely from one fiber to another fiber at a temperature increase of T=55°C [13]. The switching characteristic can be achieved by varying the refractive index of the cladding at the coupling region of the coupler by temperature.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Optimization of WDM-POF Network for In-Car Entertainment System

Ab-Rahman¹,

Guna²,

Arsad³

2015

Advances in Optical Fiber Technology: Fundamental Optical Phenomena and Applications

View full text Add to dashboard Cite

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optimization of WDM-POF Network for In-Car Entertainment System

Ab-Rahman¹,

Guna²,

Arsad³

2015

Advances in Optical Fiber Technology: Fundamental Optical Phenomena and Applications

View full text Add to dashboard Cite

“…The coupler made with strong fusion shows less wavelength sensitivity, but the one of weak fusion is more sensitive to wavelength, thus keeping the dumbbell-like cross-section [7]. The operating principle of the weakly fused coupler, called the wavelength division multiplexing (WDM) coupler, is well known and similar to the mode coupling between two identical waveguides.…”

Section: Device Structure and Operation Principlementioning

confidence: 99%

“…The attempt of utilizing an external medium having a high thermooptic coefficient has been tried. By applying a silica resin over the coupling region of a fused coupler and using a heater or cooler, a highly efficient thermo-optic tunable fiber coupler was implemented a few decades ago [6,7]. Even though the old experiments successfully showed the feasibility of using an external medium to endow tunability, they were limited by using various external media in achieving various spectral bandwidths and tunable ranges, and in showing their temperature-dependent spectral characteristics in detail.…”

Section: Introductionmentioning

confidence: 99%

Empirical Analysis of Widely Tunable Fused Fiber Coupler Assisted by External Medium of High Thermo-Optic Coefficient

Kim

Cho

Lee

2011

Fiber and Integrated Optics

View full text Add to dashboard Cite

This article reports the fused fiber coupler whose transmission spectrum is widely tuned or switched with temperature. With a proper choice of the external medium applied on the fused region of the coupler, the tuning range could be expanded up to the free spectral range of the coupler itself. A polymer with a matched refractive index and high thermo-optic coefficient was used as the external medium, and a microcoil heater was installed to tune or switch the coupler. As the elongation length of the coupler increased in the fabrication process, the tuning range increased also. With the polymer having a thermo-optic coefficient of 1:8 10 4 = ı C and a 1.440 room temperature refractive index, wavelength tuning as wide as 210 nm was experimentally obtained. The fabrication process of the tunable fused coupler and the temperaturedependent spectral properties of the implemented couplers in terms of the elongation length and the polymer index are presented in detail. The feasibility of the proposed device as a tunable filter, optical switch, and variable optical attenuator are also presented.

show abstract

“…We have demonstrated a non-planar waveguide switch based on fused fiber. 14 The cross section of the device is shown in fig. 6.…”

Section: Polymer Claddings On Silica Waveguidesmentioning

confidence: 99%

Hybrid optical waveguide devices based on polymers and silica

Diemeer

2003

SPIE Proceedings

View full text Add to dashboard Cite

The hybrid integration of polymer and silica in optical waveguides can yield devices that combine the excellent thermo-optic properties of polymers and the superior passive waveguiding properties of silica. The large difference and opposite sign of the thermo-optic coefficients of both classes of materials can be utilized to create athermal waveguide devices. In addition, it can be utilized in thermo-optic devices to induce local changes in the refractive index with boundaries that are sharply defined by the material interfaces and not by gradual thermal profiles. This can also yield devices with attractive thermo-optic behavior.

show abstract

Fused coupler switch using a thermo-optic cladding

Cited by 14 publications

References 2 publications

Optimization of WDM-POF Network for In-Car Entertainment System

Optimization of WDM-POF Network for In-Car Entertainment System

Empirical Analysis of Widely Tunable Fused Fiber Coupler Assisted by External Medium of High Thermo-Optic Coefficient

Hybrid optical waveguide devices based on polymers and silica

Contact Info

Product

Resources

About