| 1. |
|
|
| 2. |
|
|
| 3. |
- Chen, Daru, et al.
(författare)
-
Tunable and injection-switchable erbium-doped fiber laser of line structure
- 2007
-
Ingår i: Microwave and optical technology letters (Print). - : Wiley. - 0895-2477 .- 1098-2760. ; 49:4, s. 765-768
-
Tidskriftsartikel (refereegranskat)abstract
- A tunable and injection-switchable erbium-doped fiber (EDF) laser is proposed based on a line structure formed by a fiber Sagnac loop reflector and an fiber Bragg grating (FBG). Wavelength switching is achieved by controlling the power of the tunable injection laser. The self-seeded wavelength corresponding to the Bragg wavelength of the FBG can be tuned by, for example, heating the FBG, and the injection wavelength can be tuned over a wide range of about 50 nm. The characteristics of the wavelength switching for different levels of the EDF pump power and different wavelengths of the injection laser are studied experimentally. The present fiber laser has the advantages of tunability, stability, low amplified spontaneous emission noise, and high injection efficiency when compared with a fiber ring laser. Rapid wavelength switching is expected and the transient switching response of the laser is also studied.
|
|
| 4. |
- Chen, Daru, et al.
(författare)
-
Wavelength-spacing tunable multi-wavelength fiber lasers based on hybrid gain medium and Mach-Zehnder interferometer
- 2007
-
Ingår i: 2007 Pacific Rim Conference on Lasers and Electro-Optics. - : IEEE. - 1424411734 - 9781424411733 ; , s. 4391428-
-
Konferensbidrag (refereegranskat)abstract
- Wavelength-spacing continuously tunable multi-wavelength fiber lasers based on a Mach-Zehnder interferometer comb filter are achieved. Stable multi-wavelength lasing based on hybrid gains of Erbium-doped fiber amplification and fiber Raman amplification (semiconductor optical amplification) is demonstrated.
|
|
| 5. |
- Chen, Jiajia, et al.
(författare)
-
A novel protection scheme for a hybrid WDM/TDM PON
- 2007
-
Ingår i: NETWORK ARCHITECTURES, MANAGEMENT, AND APPLICATIONS V. - : SPIE. ; , s. F7840-F7840
-
Konferensbidrag (refereegranskat)abstract
- This paper proposes a novel protection scheme based on the cyclic property of an array waveguide grating (AWG) and neighboring connection pattern between two adjacent optical network units (ONUs) for the hybrid WDM/TDM passive optical networks (PONs). Our scheme uses 50% fewer wavelengths while offering one order of magnitude better connection availability than the existing scheme.
|
|
| 6. |
- Chen, Jiajia, et al.
(författare)
-
Novel Architectures of Asynchronous Optical Packet Switch
- 2007
-
Ingår i: 33rd European Conference and Exhibition on Optical Communication ECOC’07, 2007. - : IEEE conference proceedings. - 9783800730421
-
Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- We propose two asynchronous optical packet switch architectures, with efficient contention resolution based on controllable optical buffers and tunable wavelength converters TWCs. Providing a few shared optical buffers significantly boosts the performance obtained by TWCs.
|
|
| 7. |
|
|
| 8. |
- Chen, X. W., et al.
(författare)
-
Efficient and rigorous modeling of light emission in planar multilayer organic light-emitting diodes
- 2007
-
Ingår i: Journal of Display Technology. - : Institute of Electrical and Electronics Engineers (IEEE). - 1551-319X. ; 3:2, s. 110-117
-
Tidskriftsartikel (refereegranskat)abstract
- In this paper, we propose a technique to enable efficient and rigorous modeling of light emission in planar organic light-emitting diodes (OLEDs) composed of an arbitrary number of layers with different permittivity (including metals of a complex permittivity). The effects of the change of exciton radiative decay rate are explicitly included in the simulation. The numerical implementation of the technique is comprehensively discussed through an illustrative example. By using the proposed method, a bottom emitting OLED with a thick glass substrate is rigorously analyzed. The calculated results show a good agreement with the experimental results. The proposed method is efficient and well suited for optimizing OLEDs with complicated device structures. As a demonstration, we optimize the two-unit tandem top-emitting OLEDs with three types of charge generating layer. The results and design guidelines are given and discussed in detail.
|
|
| 9. |
|
|
| 10. |
|
|
