**Author details**

Xiaobo Xing

*Education Ministry's Key Laboratory of Laser Life Science & Institute of Laser LifeScience, College of Biophotonics, South China Normal University,Guangzhou, Guangdong, China Department of Chemistry, Jinan University, Guangdong, Guangzhou, 510632, China* 

#### Huaqing Yu

314 Optical Communication

**Author details** 

Xiaobo Xing

**Figure 26.** 33 crossed structure [22]**.** (a) SEM image of the device with diameter of 558, 598, and 598 nm for the nanofibers 1, 2, and 3, respectively. The nanofiber 1 is perpendicular to the nanofiber 2, the cross-angle of the nanofibers 2 and 3 is about 50. (b) Optical microscope image of the guided visible lights in the structure. The inset shows a magnified (5) view of the white spot at the crossed junction. The arrows show the propagation directions of the launched lights. Scale bar in the inset is 20 μm.

The requirement for any photonic device in optical computing, data communications or telecommunications is to be robust, lowcost, high speed and easy to integrate. Polymer MNFs are an ideal material for assembling structures that address both of these requirements, as they offer lowcost processing and are easy to integrate into existing and future networks made either entirely from polymeric or a combination of polymeric with semiconductive. Inaddition, polymer MNFs posses many other advantages such as versatility for biofunctionalization, and the promotion of specicdesired cell behaviors that are elicited by the nanofibers architecture. Polymer MNF shave can be easily produced by current technique, which exhibiting many advantages such as mechanical flexibility, permselective nature to gas molecules, biocompatibility, easy processing, and low cost. It is demonstrated that polymer nanofibers offer a unique materials platform for producing key photonic elements including lasing, light emitting diode, detectors, cavity resonator, and passive elements. All these indicate that polymer MNFs is an promising candidate for integrated optical circuit with high density and multifunction. As an excellent research platform merging ber-optic technology and nanotechnology, there is no doubt that polymer MNFs will continue to open up new opportunities in broad areas including micro-

and nanoscale photonics, nonlinear optics and quantum optics in the near future.

*Education Ministry's Key Laboratory of Laser Life Science & Institute of Laser LifeScience, College of Biophotonics, South China Normal University,Guangzhou, Guangdong, China Department of Chemistry, Jinan University, Guangdong, Guangzhou, 510632, China* 

**5. Potential to construct integrated optical circuit** 

*School of Physics and Electronic-information Engineering, Hubei Engineering University, Xiaogan, China* 

#### Debin Zhu

*Education Ministry's Key Laboratory of Laser Life Science & Institute of Laser LifeScience, College of Biophotonics, South China Normal University,Guangzhou, Guangdong, China* 

#### Jiapeng Zheng

*School of Physics and Optoelectronic Science and Engineering, South China Normal University, Guangzhou, Guangdong, China* 

#### Huang Chen

*School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou, Guangdong, China* 

#### Wei Chen

*School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou, Guangdong, China* 

#### Ruibin Xie

*School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou, Guangdong, China* 

#### Jiye Cai

*Department of Chemistry, Jinan University, Guangdong, Guangzhou, 510632, China* 
