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Method and System for Reducing Cost of a Wavelength Conversion Component

IP.com Disclosure Number: IPCOM000200869D
Publication Date: 2010-Oct-27
Document File: 2 page(s) / 71K

Publishing Venue

The IP.com Prior Art Database

Abstract

A method and system for reducing cost of a wavelength conversion component is disclosed.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 55% of the total text.

Page 01 of 2

Method and System for Reducing Cost of a Wavelength Conversion Component

Disclosed is a method and system for reducing cost of a wavelength conversion component.

Semiconductor Optical Amplifiers (SOA) are generally used for wavelength conversion using Cross-Phase Modulation (XPM). However, SOAs are complicated to fabricate, requiring multiple lithographic and etching steps. Further, due to requirement of current injection circuitry and heat sink control, SOAs consume considerable power. Therefore, there is a need for a simpler wavelength conversion component for converting wavelength using XPM, which consumes less power.

The method and system disclosed herein, performs wavelength conversion for a 10-Gb/s, 5%-duty-cycle return-to-zero ON-OFF-keyed (RZ-OOK) signal using a
4.8-mm-long silicon (Si) nanowire as illustrated in Fig. 1. The high-index contrast (~
2.4) of air-clad Si nanowires, along with their nano-scale cross-sectional dimensions result in a tight modal confinement that enhances large nonlinear effects of crystalline Si. A polymer spot-size converter is fabricated at each coupling plane of the chip to ensure efficient power exchange with lensed fibers. Accordingly, total waveguide dispersion in this case is 0.0143-0.0157 ps/nm over 1530-1565 nm. XPM is performed with a pump-probe configuration. The pump in the configuration is a 1555.5-nm,
5.5%-duty-cycle, 10-Gb/s 231-1 PRBS RZ- OOK. Further, the pulsed-source is a mode-locked laser diode. The pump pow...