OpticsInfoBase

Fabrication of Helicoidal Long-Period Fiber Gratings by Twisting a Standard Single Mode Fiber

• Abstract
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• Optical Fiber Communication Conference (OFC) 2007 paper: JThA1
• OSA Technical Digest Series (CD)
• Shin, Woojin; Yu, B- A; Eom, T J; Lee, Y L; Noh, Y C; Lee, J M; Ko, D K
• We report a new method of fabrication of helicoidal long-period fiber gratings by twisting a single mode fiber with CO₂laser beam. The transmission characteristics of...

40 GHz Actively Mode-Locked Erbium-Doped Fiber Ring Laser Using an Electro-Absorption Modulator and a Linear Optical Amplifier

• Abstract
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• Optical Fiber Communication Conference (OFC) 2007 paper: JThA10
• OSA Technical Digest Series (CD)
• Xu, Lixin; Lui, L F K; Wai, P K A; Tam, H Y; Lu, C
• We demonstrated a 40-GHz actively mode-locked erbium-doped fiber laser that incorporates an EAM and a LOA. Stable pulses with peak power of 46-mW and pulsewidth of 2.8-ps are...

Tunable Ultrafast and Ultraslow Light in Erbium Doped Waveguide at Room Temperature

• Abstract
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• Optical Fiber Communication Conference (OFC) 2007 paper: JThA11
• OSA Technical Digest Series (CD)
• Peng, Peng-Chun; Chiang, Chun-Chen; Chen, Jyehong; Lin, Chun-Ting; Chi, Sien
• This investigation experimentally demonstrates tunable ultrafast and ultraslow light in an erbium doped waveguide for the first time. Group velocity of about -67.5 m/s (fast light)...

Pump-to-Stokes Transfer of Relative Intensity Noise in Brillouin Fiber Ring Lasers

• Abstract
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• Optical Fiber Communication Conference (OFC) 2007 paper: JThA12
• OSA Technical Digest Series (CD)
• Geng, Jihong; Jiang, Shibin
• Pump-to-Stokes RIN transfer function in Brillouin ring lasers is studied experimentally in frequency and time domain, indicating 40-60dB RIN reduction at anti-resonant frequencies....

Design Optimization of High Power and Low RIN Lasers for Efficient Raman Co-Pumping

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• Optical Fiber Communication Conference (OFC) 2007 paper: JThA13
• OSA Technical Digest Series (CD)
• Faralli, Stefano; Bolognini, Gabriele; Di Pasquale, Fabrizio
• We experimentally characterize high-power (up to2W) and low-noise lasers, based on counter-pumped DRA, for efficient first- and higher-order distributed Raman co-pumping. We show...

Power Transients in Second Order Pumped Lumped Raman Fiber Amplifier

• Abstract
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• Optical Fiber Communication Conference (OFC) 2007 paper: JThA14
• OSA Technical Digest Series (CD)
• Karasek, Miroslav; Radil, Jan; Vojtech, Josef; Krcmarik, David
• We present experimental and theoretical results on power transients in an all-optical gain-clamped second order pumped lumped Raman fiber amplifier. Channel addition/removal was...

Dynamic Compensation of Raman Tilt in a Fiber Link by EDFA during Transient Events

• Abstract
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• Optical Fiber Communication Conference (OFC) 2007 paper: JThA15
• OSA Technical Digest Series (CD)
• Bolshtyansky, Maxim; King, Nicholas; Cowle, Gregory
• The tilt in channel power distribution due to Raman induced channel-to-channel interaction can be accurately estimated by relatively simple means. Simulations show that the tilt can...

Multi-Edge-Written Long-Period Fiber Gratings with Low PDL By Using High-Frequency CO2Laser Pulses

• Abstract
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• Optical Fiber Communication Conference (OFC) 2007 paper: JThA16
• OSA Technical Digest Series (CD)
• Rao, Yunjiang; Zhu, Tao; Wang, Ruokun
• An asymmetric LPFG with low PDL is fabricated by multi-edge exposure method with CO₂laser. The experimental results show the PDL of a triple-edge-written LPFG with an...

Single-Reflection-Band Fiber Bragg Gratings with Channelized Linear and Nonlinear Dispersion and Their Applications

• Abstract
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• Optical Fiber Communication Conference (OFC) 2007 paper: JThA17
• OSA Technical Digest Series (CD)
• Shu, Xuewen; Turitsyna, Elena; Bennion, Ian
• We present a new class of multi-channel Fiber Bragg grating, which provides channelized dispersion with only a single reflection band. Such gratings can provide pure phase control of...

Characterization of Cladding Modes for the Design of Long-Period Fiber Gratings

• Abstract
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• Optical Fiber Communication Conference (OFC) 2007 paper: JThA18
• OSA Technical Digest Series (CD)
• Liu, Qing; Chiang, Kin Seng; Liu, Yunqi
• We propose a method to measure the dispersion characteristics of the cladding modes of a single-mode fiber for the design of long-period gratings. The phase-matching curves for the...

Low Loss Wavelength Monitor with Sub-Picometer Resolution Based on Tilted Fiber Gratings

• Abstract
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• Optical Fiber Communication Conference (OFC) 2007 paper: JThA19
• OSA Technical Digest Series (CD)
• Tissot, Yann; Limberger, Hans G; Salathé, René P
• A wavelength monitor based on a pair of tilted fiber Bragg gratings with low insertion loss (<1 dB) and sub-picometer wavelength resolution is reported.

Quasi Single-Mode Fiber for the Cost-Effective Implementation of Broadband Access Networks

• Abstract
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• Optical Fiber Communication Conference (OFC) 2007 paper: JThA2
• OSA Technical Digest Series (CD)
• Jung, Seung Pil; Lee, Kyung Goo; Jung, Chang Hyun; Lee, Jun Haeng; Son, Eui Seung; Chae, Jang Won; Chung, Yun C
• We designed and fabricated quasi single-mode fiber (QSMF) for the cost-effective implementation of broadband access networks. The core diameter of QSMF was 20-μm. Using this fiber,...

Single-End Spectral Resolved Measurement of Polarization Mode Dispersion in Optical Fibers

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• Optical Fiber Communication Conference (OFC) 2007 paper: JThA20
• OSA Technical Digest Series (CD)
• Dong, Hui; Shum, Ping; Zhou, Junqiang; Gong, Yandong
• An improved single-end backreflection technique is proposed to perform the spectral resolved measurement of polarization mode dispersion in optical fibers. The agreement between the...

Modal Control of a 50\mum Core Diameter Multimode Fiber Using a Spatial Light Modulator

• Abstract
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• Optical Fiber Communication Conference (OFC) 2007 paper: JThA21
• OSA Technical Digest Series (CD)
• Neo, Poh Ling; Freeman, Jon P; Wilkinson, Timothy D
• An iterative, self-correcting system for doing modal control using adaptive optics in a 50μm core diameter multimode fiber (MMF) is designed. It is shown experimentally to reduce the...

Automatic EDFA Gain Spectrum Equalization Using LPFGs on Divided Coil Heaters

• Abstract
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• Optical Fiber Communication Conference (OFC) 2007 paper: JThA22
• OSA Technical Digest Series (CD)
• Bae, Jun Kye; Koh, Dongyean; Kim, Sang Hyuck; Park, Namkyoo; Lee, Sang Bae
• We describe a dynamic EDFA based on automatic feedback control of LPFG based active gain equalizing filters. With LPFGs mounted on a divided coil heater array, wide dynamic-range...

Proposal of a Novel MMI-Based NxN Non-Blocking Optical Ring Switch

• Abstract
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• Optical Fiber Communication Conference (OFC) 2007 paper: JThA23
• OSA Technical Digest Series (CD)
• Xie, Nan; Utaka, Katsuyuki
• Novel MMI-based optical NxN switch network with nested rings topology reduces as much as 20% of switches compared with the Beneš configuration.

Loop-Back AWG Router with Non-Uniform Transmission Capacity

• Abstract
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• Optical Fiber Communication Conference (OFC) 2007 paper: JThA24
• OSA Technical Digest Series (CD)
• Moriwaki, Osamu; Suzuki, Kenya; Takahashi, Hiroshi; Sakai, Yoshihisa; Sato, Ken-ichi; Kakehashi, Shoji
• We developed an AWG-based wavelength router with a loop-back structure for a system with non-uniformly distributed traffic. We describe the design of the loop-back waveguides and the...

Compact 2x2 Couplers for Unequal Splitting of Power Obtained by Cascading of Short MMI Sections

• Abstract
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• Optical Fiber Communication Conference (OFC) 2007 paper: JThA25
• OSA Technical Digest Series (CD)
• Feng, David J Y; Lay, T S; Chang, T Y
• More than 32% length reduction for 0%, 15%, and 28% cross-coupling multimode-interference couplers is obtained by cascading two short MMI sections. Previously unavailable cross...

Fabrication of Cascaded Perpendicular Up Tapers for Si-Wire Waveguides

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• Optical Fiber Communication Conference (OFC) 2007 paper: JThA26
• OSA Technical Digest Series (CD)
• Yoda, Hidehiko; Ikedo, Hideki; Tsuchiya, Haruhiko; Shiraishi, Kazuo; Tsai, Chen S
• A new type of spot-size converter (SSC) is proposed for efficient coupling between a single-mode fiber and a silicon wire waveguide with cross section of 0.3×0.3μm²....

Synchronized Coherent OCDM System Using 128-Chip Orthogonal Sequence SSFBG Encoder/Decoder

• Abstract
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• Optical Fiber Communication Conference (OFC) 2007 paper: JThA27
• OSA Technical Digest Series (CD)
• Oshiba, Saeko; Kotani, Yasuhiro; Moritomo, Renichi; Sasaki, Kensuke; Kobayashi, Shukou
• Synchronized optical code division multiplexing system using 128-chip orthogonal sequence SSFBG en/decoder was experimentally demonstrated. Multiplexing for more than 17 users is...