LightSmyth透射光栅 1． Ripple-Free High-Efficiency Transmission Grating 无波纹高效率透射光栅 Transmission gratings for wavelength-selective switches and other telecommunication applications often exhibit wavelength dependent insertion loss ripple caused by internal Fresnel reflections. LightSmyth™ has developed a line of Ripple-Free transmission gratings retaining high efficiency, low PDL, and purely inorganic robust construction. LightSmyth Ripple-Free transmission gratings comprise a unique product combining low cost, high volume and lithographic fabrication with a wedged grating substrate. This approach provides epoxy-free monolithic transmission grating with very flat spectral response (ripple reduction from <0.1 dB to <0.01 dB). 透射光栅在波长选择交换器和其它电信应用中，常常表现出引起内部菲涅耳反射波长相关的插入损耗波纹。 LightSmyth™开发了一系列无纹波透射光栅，高效率，低PDL，和纯无机的坚固结构。LightSmyth无波纹透射光栅具备独特的产品优势，低成本，高容量，光刻加工，楔形光栅衬底。加工出的无环氧单片透射光栅具有非常平坦的光谱响应（纹波抑制从<0.1 dB to <0.01 dB光栅）。 2． Pulse Compression Transmission Gratings 脉冲压缩透射光栅 LightSmyth offers a wide range of pulse compression transmission gratings operational in near infrared spectral region. LightSmyth pulse-compression gratings provide best-in-class performance and extremely competitive pricing. The gratings have been deployed in pulse compression systems worldwide. LightSmyth 脉冲压缩透射光栅应用在近红外光谱区，提供一流的性能和极具竞争力的价格，被广泛应用在全球的脉冲压缩系统中。 3． High-Power Transmission Beam Combiners 高功率发射光束组合 LightSmyth gratings are ideally suited for high power beam combining applications due to extremely low power loss, low material absorption and use of only fused silica and other inorganic dielectric materials in its composition. LightSmyth gratings successfully passed the requirements of the NAVY High Energy Laser program and industrial high power laser systems. LightSmyth光栅非常适合高功率波束组合应用，由于非常低的功率损耗，低的材料吸收和只使用熔融二氧化硅和其他无机介电材料组成。 LightSmyth光栅顺利通过海军高能激光项目和工业高功率激光系统的要求。 4． Ultra-High Efficiency Transmission Gratings 超高效透射光栅 Transmission gratings operate to angularly disperse incident light into a spectrum. LightSmyth’s transmission gratings utilize state-of-the-art design and wafer-scale fabrication to deliver record-breaking optical performance combined with low cost providing your optical systems with a powerful competitive edge. Each grating is a master, not a replica, resulting in low scattered light and long lasting performance. 透射光栅以分散角度入射光进入光谱。LightSmyth透射光栅采用国家最先进的设计和晶圆级制造技术，提供破纪录的优质光栅，低价格，为您的光学体统提供强大的竞争优势。每个光栅独立制造，保证低散射光率和持久耐用。 Advantages: • Ultra-high efficiency • Ultra-low polarization-dependent loss • Robust dielectric materials, no polymers are used • Each grating is a master, ultra-low scatter • Highly competitive pricing; Telecordia-qualified Applications: • Optical telecommunications (WSS, GRISM) • Remote optical sensors and spectroscopy • Pulse compression • High power lasers • Spectral beam combining 产品优势： •超高效率 •超低偏振相关损耗 •强大的介电材料，不使用聚合物 •每个光栅是高手，超低散射 •价格合理， 通过Telecordia质量认证。 应用范围： •光通信（WSS，GRISM） •远程光学传感器和光谱 •脉冲压缩 •高功率激光器 •频谱组束 产品列表 Polarization-Independent Telecom Transmission Gratings P/N prefix Line Density (Lines/ mm) Line Density Uniformity (Lines/mm) Wavelength Range (nm) Angle of Incidence1 (°) Diffraction Efficiency2 (%) Insertion Loss Ripple (dB) Spectral Uniformity2 (dB) Polarization- Dependent Loss2 (dB) Spatial PDL Uniformity2 (dB) Wavefront Error (@1545 nm λ) Substrate thickness (mm) T-940C 940.07 0.001 1525-1565 46.5+1 > 94 < 0.1 < 0.2 < 0.2 +0.05 < 0.1 0.675+0.05 T-940L 940.07 0.001 1570-1610 48.4+1 > 94 < 0.1 < 0.2 < 0.2 +0.05 < 0.1 0.675+0.05 T-940CL 940.07 0.001 1526-1610 47.5+1 > 92 < 0.1 < 0.2 < 0.2 +0.05 < 0.1 0.675+0.05 T-966C 966.18 0.001 1525-1565 48.3+1 > 94 < 0.1 < 0.2 < 0.2 +0.05 < 0.1 0.675+0.05 TRF-940C 940.07 0.001 1525-1565 46.5+1 > 94 < 0.01 < 0.2 < 0.2 +0.05 < 0.2 5.6+0.2 TRF-966C 966.18 0.001 1525-1565 48.3+1 > 94 < 0.01 < 0.2 < 0.2 +0.05 < 0.2 5.6+0.2 Notes: 1 Gratings will be highly efficient over larger range of angles – please inquire. 2 Determined from parabolic fit of efficiency as a function of wavelength for s- and p- polarization, worst case in the wavelength range. High Dispersion Single Polarization Telecom Transmission Gratings P/N prefix Line Density (Lines/ mm) Line Density Uniformity (Lines/mm) Wavelength Range (nm) Angle of Incidence1 (°) Diffraction Efficiency2 (%) Insertion Loss Ripple (dB) Operational Polarization Spatial Uniformity2 (dB) Wavefront Error (@1545 nm λ) Substrate thickness (mm) T-1200C 1201.20 0.001 1529-1568 68+0.5 > 90 < 0.03 S < 0.25 < 0.1 5.6+0.2 T-1166L 1166.18 +0.001 1572-1612 68+0.5 > 90 < 0.04 S < 0.25 < 0.1 5.6+0.2 Polarization Independent Datacom Transmission Gratings P/N prefix Line Density (Lines/ mm) Line Density Uniformity (Lines/mm) Wavelength Range (nm) Angle of Incidence1 (°) Diffraction Efficiency2 (%) Operational Polarization Polarization-Dependent Loss2 (dB) Wavefront Error (@650 nm λ) T-1702-895 1702.13 0.001 850-940 49.5+1 > 90 S < 0.3 < 0.25 T-1200-1310 1201.20 0.001 1275-1345 52.0+1 > 85 S < 0.3 < 0.25 Other High Efficiency Transmission Gratings Optical P/N prefix Line Density (Lines/mm) Line Density Uniformity (Lines/mm) Angle of Incidence1 (°) Optimal Wavelength Range1 (nm) Operational Polarization2 Diffraction Efficiency2 (%) Wavefront Error T-1850-800s 1851.85 0.001 47.8+1 800+20 S > 94 < 0.2 λ @ operational wavelength over 25mm T-1200-850s 1208.46 0.001 30.7+1 850+20 S > 94 T-1500-875 1503.76 0.001 41.0+1 875+20 Any > 94 T-1850-915s 1851.85 0.001 57.9+1 915+10 S > 93 T-1500-930 1500.38 0.001 44.2+1 930+20 Any > 94 T-1600-976s 1600.00 0.001 51.3+1 976+10 S > 94 T-1850-970s 1851.85 0.001 63.9+1 970+10 S > 93 T-1739-1030s 1739.13 0.001 63.6+1 1030+10 S > 90 LSFSG-1000 1000.00 0.001 31.0+1 1040+20 Any > 94 T-1702-1050s 1702.13 0.001 63.8+1 1054+10 S > 94 T-1600-1060s 1600.00 0.001 58.0+1 1060+20 S > 94 Notes: 1 Gratings will be highly efficient over larger range of angles – please inquire. 2 P-polarization: incident electric field vector perpendicular to grating lines. S-polarization: incident electric field vector parallel to grating lines.